53 files changed, 3866 insertions, 0 deletions

diff --git a/2015/01/.gitignore b/2015/01/.gitignore
new file mode 100644
index 0000000..60d075d
--- /dev/null
+++ b/2015/01/.gitignore
@@ -0,0 +1 @@
+puzzle-[12]
diff --git a/2015/01/Makefile b/2015/01/Makefile
new file mode 100644
index 0000000..c32dafa
--- /dev/null
+++ b/2015/01/Makefile
@@ -0,0 +1,7 @@
+all:
+	${CC} ${CFLAGS} -o puzzle-1 puzzles.c
+	${CC} ${CFLAGS} -DPART2 -o puzzle-2 puzzles.c
+
+.PHONY: clean
+clean:
+	rm -f puzzle-[12]
diff --git a/2015/01/input b/2015/01/input
new file mode 100644
index 0000000..73e014e
--- /dev/null
+++ b/2015/01/input
@@ -0,0 +1 @@
+(((())))()((((((((())()(()))(()((((()(()(((()((()((()(()()()()()))(((()(()((((((((((())(()()((())()(((())))()(()(()((()(()))(()()()()((()((()(((()()(((((((()()())()((((()()(((((()(())()(())((())()()))()(((((((())(()())(()(((())(()))((())))(()((()())))()())((((())))(()(((((()(())(((()()((()((()((((((((((())(()())))))()))())()()((((()()()()()()((((((())())(((()())()((()()(((()()()))(((((()))(((()(()()()(()(()(((())()))(()(((()((())()(()())())))((()()()(()()(((()))(((()((((()(((((()()(()())((()())())(()((((((()(()()))((((()))))())((())()()((()(()))))((((((((()))(()()(((())())(())()((()()()()((()((()((()()(((())))(()((())()((((((((()((()(()()(((())())())))(())())))()((((()))))))())))()()))()())((()())()((()()()))(()()(((()(())((((())())((((((((()()()()())))()()()((((()()))))))()((((()(((()))(()()())))((()()(((()))()()())())(((())((()()(())()()()(((())))))()())((()))()))((())()()())()())()()(()))())))())()))(())((()(())))(()(())(()))))(()(())())(()(())(()(()))))((()())()))()((((()()))))())))()()())((())()((()()()))()(((()(()))))(())()()))(((()())))))))))(((())))()))())()))))()()(((())))))))()(()()(()))((()))))((())))((()((())))())))()()(()))())()(()((()())(()(()()())())(()()))()))))(()())()()))()()()()))(()(()(()))))))()(()))()))()()(()((())(()(())))()(((())(())())))))()(()(()))))()))(()()()(())()(()(())))()))))()()(((((())))))())()())())())()())()))))()))))))))())()()()()()()())))()))((())()))())))()((())()))))()))())))))))())()()()))()()(()((((()(((((((()(())((()())((()()))()))))(())))()()()(())((())()())))(())))(())))(((()()))()(())(((()(()))((())))())()))((((()))())()))))))))()(())())))(()))()(()()))())()()(())())))())()()(()())))()((()())(()(())(())))))))))))))(()))))()))))))()()())(()(((((()(()())))())()))(()))()))(()()))()())(()))())()(())((()()))))))())))())()(((())))(()(()))()()))()(()))))))((()())(()))))))()())))()()))))))))((((((((()()()(()))))))()())))())))()()((())()))((())(())))())())))()()()((()((()(())))())()(())))))))))()())))()()()()()()))()))((())())(()(()))))))(()()))()))(())))()))))))))))))(()))))))))()))))()))()())()))()()))))))()))))((()))))(()))())()(())))(()())((((()())))()))))(()))()(()()(())))))())))))()))))))())))())))))())))())())))())(()))))(())()(())))())()))((()()))))))())))((())))))))())))(())))))()()())))))())))))()))))))()))()()()(()(((()())())())(()))())))))((()(())(()))))))))(())))()()()())())(()))))()()()))()))())())())()(())))()(((()((((())))))))()))))))))))))))))))))((())()())(()))))()()))))))(()()(())())))())))((())))((())))))))))))))()))))()(()))))))())))))()))(()()())(()())))))))))()))))))(())))))()()))()())(((())))()))(()))))))))(())())))())))())())())()()))((())()(())()())()))()())(())(()))))()())))(()(((()))))))()(()())()()()))()))))))))()()()(())()())()(((((()))()())())(()))))()()()(())))())))()((()())))(()))())()(()())())(()))()()))((()()))((()()()()())))(())()))(()(())))((()()))))))))())))))))())()()))))))))))))))))(())()(())(())()())())()))()(()))))())())))))()())()(()))()()(())))(())())))))(()))))))))))))))())())(())(())))(((()))()))))())((())(()))())))))))())))))())))()))()))))))))))))())()))))()))))((()))(())))()(())))(())()))()))())))())))))))()(()())())))()()())))(())))))(()))))))))))))(()))()))()))())))(((()()()(())((()())))()())(((()))(())()))((()()()())))())(())(()))))()(((((())))(()))())())))))))((((()()()))())())()(()(()())))))))))()())())))(())))()())(((()(())())()()))())())))))))((()())((()()(()))(()(())))()))()))(()))(()))()()(()(((())((((()))()(()))((())()(()(()())()(()))()())))))(()))()))())()())))())))(())))((())(()())))))()))(())(()))()())()(()()((()(()))))))()(())(()())(())()))(((())()))(()()(()()()))))(()(())))()))))())))))())(()()()()()()(((())))(()()))()((())(((((()()())))(()))(()))()()))(((())())()(((()()()()))))(()))(())())))()())(()()())())))))))()))))((())))()())(()))(()(()))())))))())(())))))()()())())()))()()(())))(()))(())((((((())(()))(()))())()))(()()(())))()))(()()))()))()(())))(())))((()(()))(())()()())())))(((()()())(())()))))))()(((()(((((()()(((())(())))())()((()))))((()())()(())(((())))(((()((()(()(()))(()()))())(()))(())(())))()))))))((((()))()((((()(()))()))()()))))()(()(()))()(()((()(((()(()()(((()))))()(((()(()(()(((()(()())())()()(()(()())())(()((((())(()))()))(((((()()())(())()((()()())))()()(((()()))()((((((((()(())))())((()))))(())))(()))))((()((((()()(())(((((()))(((((((((((((()())))((((()(((()((())())()))((()))()(()()((()()()()(()()(()(()(((())()(()((((((()((()()((())()((((()((()()(()()())((()()()((()((())()(()(((()((())((((())(()))((()(()))(()())()((((((((()(((((((((((()))(()(((()(()()()((((())((())()())()))(())((())(()))(((()((()(())))(()))))((()()))))((((()(()(()())(()(())((((((((()((((()((()(((((()))())()(()))(()()((()(())(((((()(())()(((((()()))))))()(((())()(()()((((())()((())((()(((())(((()))((()()((((()(())))))((()((((()((()((()(((())((()))(((((((()(((()((((((((())()))((((())(((((()((((((((()(((()((()(((()()(((()((((((()()(()((((((((()()(()(()(())((((()())()))))(((()))((((())((((()())((()(())()((()((((((()(((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\ No newline at end of file
diff --git a/2015/01/puzzles.c b/2015/01/puzzles.c
new file mode 100644
index 0000000..6690a64
--- /dev/null
+++ b/2015/01/puzzles.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main(void)
+{
+	int c;
+	FILE *fp = fopen("input", "r");
+
+	register int floor = 0;
+	for (register unsigned int i = 1; (c = fgetc(fp)) != EOF; i++) {
+		floor += (c == '(') ? 1 : -1;
+#ifdef PART2
+		if (floor == -1) {
+			printf("%u\n", i);
+			return EXIT_SUCCESS;
+		}
+#endif
+	}
+
+	fclose(fp);
+	printf("%d\n", floor);
+
+	return EXIT_SUCCESS;
+}
diff --git a/2015/02/input b/2015/02/input
new file mode 100644
index 0000000..5f3335f
--- /dev/null
+++ b/2015/02/input
@@ -0,0 +1,1000 @@
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diff --git a/2015/02/puzzle-1.awk b/2015/02/puzzle-1.awk
new file mode 100755
index 0000000..e316ba2
--- /dev/null
+++ b/2015/02/puzzle-1.awk
@@ -0,0 +1,20 @@
+#!/usr/bin/env -S awk -f
+
+function min(a, b, c)
+{
+	if (a <= b && a <= c)
+		return a
+	if (b <= a && b <= c)
+		return b
+	return c
+}
+
+BEGIN { FS = "x" }
+{
+	x = $1 * $2
+	y = $2 * $3
+	z = $1 * $3
+
+	sum += (2 * x) + (2 * y) + (2 * z) + min(x, y, z)
+}
+END   { print sum }
diff --git a/2015/02/puzzle-2.awk b/2015/02/puzzle-2.awk
new file mode 100755
index 0000000..e031b94
--- /dev/null
+++ b/2015/02/puzzle-2.awk
@@ -0,0 +1,20 @@
+#!/usr/bin/env -S awk -f
+
+function min(a, b, c)
+{
+	if (a <= b && a <= c)
+		return a
+	if (b <= a && b <= c)
+		return b
+	return c
+}
+
+BEGIN { FS = "x" }
+{
+	x = $1 + $1 + $2 + $2
+	y = $2 + $2 + $3 + $3
+	z = $1 + $1 + $3 + $3
+
+	sum += $1 * $2 * $3 + min(x, y, z)
+}
+END   { print sum }
diff --git a/2015/03/input b/2015/03/input
new file mode 100644
index 0000000..6e8d40e
--- /dev/null
+++ b/2015/03/input
@@ -0,0 +1 @@
+^^<<v<<v><v^^<><>^^<v<v^>>^^^><^>v^>v><><><<vv^^<^>^^<v^>v>v^v>>>^<>v<^<v^><^>>>>><<v>>^>>^>v^>><<^>v>v<>^v^v^vvv><>^^>v><v<><>^><^^<vv^v<v>^v>>^v^>v><>v^<vv>^><<v^>vv^<<>v>>><<<>>^<vv<^<>^^vv>>>^><<<<vv^v^>>><><^>v<>^>v<v^v<^vv><^v^><<<<>^<>v>^v>v<v<v<<>v<^<<<v>>>>>^^v>vv^^<>^<>^^^^<^^^v<v^^>v<^^v^^>v>^v^^^^>><<v<>v<>^v^<v<>><>^^><<^^<^^>vv<>v^<^v<vv<<<>^>^^>^<>v^^vv<>>v><<<>vvv<>v<>><^<^v<>^vv>^^v<v<v><^<>>vv<^>>^>>vv^v<vv^vv<^<<>>^v^<>^>>>>vv>^^>v>vv>v><^vv^<<v>^<<^^<v<v>vv<v^^<>^^v>^>>v><^<<vv<<v^vv^^^v>>v<<v^><vv^><vv<^vv<<vv^v<<^v<^^v>><<v^>>^^<>v>><<v<>>^^<v>>^^>>vvv^><<<<<^<^vv<^<><v<<>^^^<<<^>^^^<v<<vv>vv<>^<>v<^v>^<<<v<v<v>>^v<>>v<<^<<v<<>^<<<><><>^>>>>^>v^v<<v<v<<>>vv<^vvv^^^^<vv>vv>^v^^v^<v^v><^vv<^vv>v<^>vv<>>^>^><vv<><^>v>^v>vvv<>^>^v<><>vv>><^v^<><><v>>v^v^><^<^>vv>v<^>vvv>v<<<<<^<v<<vv<^^^<<>>^v<vv<^<>v>^<v<>><><>^<<v>v^>^<vv>><><>>^>^>><^<v>^^>^^>^^v^^<^v^^>v^^>>><<><v<v<<v^vv<><><>^<v>^<<^^v^>v>><>^^^><^vvv<^^^^^v><<><v<^^v><><>>^>vv<vvvv<<>>><v<^^^^v<<^><v>^vv<v^^v^vv<^^>^^<v>><<v^>v<^^>^<^<v<^^v>^<<v>^>>>^v<>v<^^^>vvv^v<<^><>>><vvv^<^^^<^>>v>>><v>^^vvv^vvv<^^^^v^v^<vv^<v>^<<^>v^v^<<><>><^v><v<><<>><<<>^v>v<>^<v^v>^vv>>^<>v^^<<v><^v>>v<>>^v^^>><^>v^<^v^^>><>v^>^v^v<<<v^<v^^v<^>v<><>vv>>>>^>v<>v<<<>^^>vv^v<><v^<>^<<<<>>^^>^v<v^v<<><>^v<>>^v^<<^<^>>>^vv<><v<^^<>v^>>v<^^v<v>>>^>><<><<<>><vv<v>>^v>><^<v><vv>^vv<v<>>><>v^><>vv<^^v^^^v<>><^vvv<<^<>v>>>v>><v><>>><>><v^><v^v<v>^v>v<v>>^^<^>^>v><>vv>^v><<>>>>>>>^<<^vv^^vvvv<^^><<<v<<>vvv<>^><<v<v^v^<<v>v<>>^<vv^<v<v>^<<^^vv>v>^<vv<<>v<v^<>v>>^v^^vvvv>^^>>v^v^^><<^>v>>^^>^<^^<>v<v>vv^vv>v<v>>^v<><^vv^<vv<v^^^v<^v^>>^v>>>^^<^<^>^v^>^>>>^v>^>^^^>>^<>v^^<>^v<<^^>^^<vv<>v<^v^>><^v^>^<>>^vv^vv^>v^<vvvvvv^>><^^<^v<^<v^<<^^<<v^<^>><>v><^v^v^^^v>v^<>^<<v<^^vvv<v>^^>^v^^<><vv^v^>v^<<>>vv<>>>>v>v<>^>>>v<>^^><v<v^^^<>^<^><>^><<v>><>^<<>>><<^<vvv<^><v>>^vv^v>><v<>vv^<<^^<<><v><<^<v<vv<<^v^vv>v^>>>v<<<<v<<>v>^vv<^v><v<v>v<^>^^vv>v><v>><<v<<v^v>>><>^<>><><<^<<^v^v<<v>v>v<v<^^>vv<^v^^^<v^<<<v<>v^><^v>^<^<v>>^<<<v>>v^<><>>^v<>vvv<vvvvv<^^><^>><^^>^>^v^vv<^><<^v>><^^v>^v<>^>vvvv><^>^<<v^^vv<v^^<><>v>^>>^<^<<<^v^^^>^>>^>><><<^>v^^<v>>v<<<<vvv<vvvv^<^<v^^<>^>vvv^<vv^v^v>^<<><v><^v^v^^^>^^>^vv<>v>>v^>vv^vv>v<^v^^>>^v^v<>>^^><<v<<>><>>>^>^<>^^v^^><^<>><<^<vv^^^^^>>vv^<v^<^>>>>v<<><<^>vv>vvv>^<><>>>>vv><<v^v<^^^<<^^^vv^<v<><><<<<>><<v^<>v>v^><>v^v^^><>v>v>^^v<^v<>>^^^^^<v>><v^>^^<v>><v^^>v<^<^>>>^><^^>><<>>^><>^^^>v^^^>^^v^<>^^><^>>><><^>>v<v^>v<^><v<v^<>v<^v>v^<^vv^^><<<><><^v^<v<^^>v>v^>>^^vv^<v>^v>^<^v<>^>^><^<v>^v><^<^<>v^^>^><>>><<v><<><>v<<^v^^<^><>^<><><v>v<^^<v<v>>^^<<>>^<v>><^><^<^>^^v<>v>>><><<>^>v><><<<<v^^^^v<>>^^^v>><<^v>^>>><vv^>>^vv<^<>>^<^^<^v>v<v<<<<<>^<<^<<<<<^<^>>^><<>><>v^v>^<^>v^<><vvv^>^v^v^v><^<v<>vv<<^<>^^^<>^v>^<v^^<v^v>v<>>^>v<<>v<>v^v>v<<<>>v>vv>>v<<>v<>v<^>^>^<v>>v>^>^^^<vv>v<<>>><v>^vvv^^>^^<^vv^^^^>v>^v^>v^^v^>>^v>^vv>^^v^<<<<>^<><^<^<<^^>v^^^v<>>vvv<v>>vv><v<v>^<^v>>^v<vv^<<v<vv><^^v^v>v<>^v<<<^^v^^^<^v>v^v^v>><vvv<<>v<>^v>vv^v>vv<<^v<v>^v>v>><^v<v<>v>>>><<<><vv><>^v^<^vvv>v<>><^v>^>><v>vv<><><>v><>>><^>vv>>^<>v^>>^><<<^><<>^v^>>><><>vv>^<>^>^v^^><^>>><<>v^<^vv>^<^vv>><v<>vv<v><><<^><>v<^^<^>vv^^^^vv<<v><>vv<><v>v<>>>>^><v><>^<><>v<>><<>^^vvv>^^^<><>>vvv^v>><>vv<vv>^^^v^<<>^^v<><<^^v<>^^>^<^^v>>v^v^^>>v>>>^<<^<>^>^^v>>>><vv<<>^v<<vv><<^^vv><^>vv<>>v<v>v^>v>>v^<vv<<<v><v^>vvv^^>vv^<<v>v^>>v^<>>><><<^^<^v>^>>>v>v>^v<>vv><vv<vvv<<v>v>^v<<<>><<><><>v^>>>v^>v^>>vv^^<v>^<>>><^>v^<>^^><v>v<><<<><v^v<<<v<v^>v^v>^>v<^<>v>v^^>>v>vv^v<>>^^^^<>v^>>>>>>>><v<^<<vvv<^v^>^v<^<<>>><<<^<<^>^>v^<>^<<<>v>><^vv^>^>^>>>^<vv><v^^^<v^<v<><v^vvv<>v<vvv^vv<<<v^<^<^vvvv^<<vv<^v><<>^>^<v^v^<^>v^><>>v^>v^>^>>v<>vv^v<<>^^>>vv<>vv>>^v<^vv>^v>v<v^vvv^<<^><>v^<><vv><>v^^><<<><>^>^v^<>><vv<^>v^v>v<>><v<<^>^<vv<^v>^<<v><^<^^vv^<>><v^>^vv^<>>^^^^v>v><^^^v^<<<>^<^<<>><>>v<<^v^>><><v^>>^vv^v>vv>>>>>>^^<<>v^>v^v>^^>>><vv^^^v>^v>>^^^<>><>v^<<<v<vv^^<v^<<<>v>v^^^<vv<>>^v>^v<^<<><>vv>^^^<^^vv<v<<vv>^^>vv>v<<^>^vv><^><v>^^^^v<<vv>v^<<^^>>^^vvvv^v^>vv>>v^<v>vvv<>>^><>>v^^>>^<>>vvvv^>><v^v<^^<^vv>>v<<^<<^><v^^><v^>v^>><<<v>v>v^>^v<v^vv<^^^v<^<vvvvv<<vvv>><>v<v<v<<^v<><<>vv>><v>><^>>^^v>^>><>vv^><<>>vv<<<^<^^>^<<^>>>><v<^v<<<>>v>vv<^>^v><>>v<v^v<>v^vvvv>v^>>v><<^<v>^^v>>vv^^>v>^v>^v^^>^<^vv<v<<^>vv<<^>>^<<^^>>^<^>v^><^vv>^^v><v^>>><>v^v>^v<^><<<>vv><v>v<><>>v^<>^^>^<>^<<^>>vv^><^<v<^^vvv>>v^>>v^>v>vv><>>v<^>><<<v<<vv><v<v<v>v<v>vv^vvv^vv^>^>v><vv<v^^<>>>>vv^>^<>v<^>^<^v>vv<^<<>>^<^<vv><^^<>^<<v^v^>v<<><v>v>><^v<<^vvv>v>v<<^^<^^>v<vv<v<v^v>^^^>^>vv<v<<^^v^<v<^>^^^vv>v<>>>vv>><><^><><<<vvv<<^^v^<v^<<^>>vv>vv^v^>>><v><<v^v>>v>>vv>^^vvv^>^^>^>^>^v<<^vv^>vvv^^vv><^>^v^>^><>v<^^vv<v><v^<><^<>><v>^^v^v>v^vv<>><^v>^<^v>^<>^v>>>><<vv^^^vv^>>><vv^v>>v><^v^vv><<^v<<>^^<v><^v>vvv<><^^><<^v><>^<^v<^^<^vvvv^^>>>>vv>v>>>v<v^><<<<v>>v^><v>>vv^v<vv<>vv<>vvv>>>><>>><>^v<v^v><vvv<<v^^v^v<>>><>>^vv<<v<><<vv<v^>^^vv><^v^v<v^vvv^v>v^^^vv>^><^vvv<<>^vvv^<v<v^v>>>>^<<<><<<<<^v<^^>>>>^>^<v^^^v<vvv<vv^<>v<<<^<^>>v^<v><<><<^^vvv^>v<>>^^>v>^v>>v<v><v>>>>^<^<^>v^v<vv<>^>><>^<<^vvv^^<>^<vvv<>v^>^^<<^>^vv><vvv>>v^v^>v><v>^<^^<>^>^>>>^^vvv^<<>v^<<>><>v<^<^>v^>^vv><v<^<<<^v>^>>^<^v^<<<<^v^><v^v>v^><<v<><<v^<<^<<v<<v><v><><^^^^>v>^^<v>>v<vvv<<<>><>>^><<><^<>>^^>vv<^><^v^><vvv>>>vvv<<vv^<^^^<^>^<>>^>>^v^<^^v>^<v<<>^^v<^vv^><vvv>>^v><<^<v^<><><>>^>vv<<>^^^v^^<v<>><>>vv>v^>vvv^^v<vv<^<^>>^>>^>>v^<<<v^>v^<^v^vv^><^<^v<<v<<>v>^v^<<<v^vv<v<<>^^<v>>>^<v<^>^^v<v>>>><vv<^^<<>><<v<v>^^v^>>^^>>^v^<^v>v^v^v^v^>v^vv<><>^^<>^><^^^<<<^<v>v<<>^<^^^^^v^<^<<^^>^vv<>v^>><>>^>v>v<>^>v<v^>>><>^<><v>>>^>^>>v^><v<>v><^vv^>v<<v>v<><<vv<<v>^><^<v^>v<<v^v<<><v><>v<v><>^^<v<>><<>v>vv<<v>^v<v>vv><><>vv^<<>^>^<^>>>^v>v<^v^^^vv<>>>^<<^>>><<^^v^>v^<^v>vvv>v^^vv>^^>>v<>^<<>^<><^^v^>><>^>v>>^^^<<^^v<>^^>^<>^>><^>^vvv><^>^<^>^>>vv<^>>^v>>^<>>^^>>>v^<v>>v<<v<^>>v^^vv>v><^v^^><vv^v<^>v<<>v^^<><>^>vvv><^^^>^v^>v>>^vvv<^vv>^^>^>>v<>><<^v<<v^>^><>vv^<<^^vv><v>>^<^><^<v>^v<v>^<<>^v^^>v^>>^^^<^vv>v^>>>vv<<>v>>>^>v^^<v^v^^v^>>v<v<<v>^<<>>vv<<^v>v<<vv<<^<^v<^<><^^>v>>v>v^>><vv<^v<^>^>>v>^><<^<<>^v<v>>><^^<^<<<v^^>^>vv<<>^<>^<v^<<^v>vv>^^^v<^v><v<<<<<vv>vv>^^^^>v>v><<^<<<^vv><^<<<><v>><v^v>v<<v^^<v^>v>^v^v^<^<^vv>vvv<^^v<>v<<<<>v<v^<vvv^^^<<^<^<<>^<<><<<>v<^>^^v<^^v^>vv>vvv>v><v^^<<>>^><^>>v<<vv>v<<^^^v<<^v^^><><<<><<>v>^<<>v<<<^v>><v^v<^v<v^vv>v>><<^<><^v^^v<v>^>^>vvvv<<><<>>^<vv>^^><v<>v>v<v^^>^><>>><^><<><<<^<>v^><vv^^^^>>^v^>v^<>>v>^^><^<^v^<v^>>v>^vvv<>>v<v^v><>^vvvv<v^<<v^<<^^vv>><<<<<<v><<<v<v^v^^<v^^<>v<<<<^v<<><<v^<^><v<vv<v^v^<v^^vv<v^v<<<>^<<>vv<v<^>^<<><vv<<vv<v<^<^<>><^^<<>>>vv>>>>>>^v<v<>>v^v^^<v^<<<<>><<^v^^^<>^<vv>>>><>v^v^vvv^>>v>><v^v<<<^v>>^^<<^^vv><<<^^^<<<v><^^>>>>vvv^v<^>^^>v<^<><vv<v<>v>>>^vv<<^<v>^v^>^>^v>v>v^v^>v<<v>><>><v^^<<^>>>><<^v^<>^v<vv><>vvv^>v>v<v<v^>^<><><>^>>><v<<<v^vv><>^>^^<<v^>>v^^>^<v>><>><>v^v^^v>>>>vv>>^v<<^v^<>^>v^^>^^<<vvvvvvv>^<v^<<^<<>><<<^^^v^^^^v<^<>v<^^<>vv^^v^<>^<<^>>v>v<<<^^^^vvv^<^<><>v<<v^<^<>>><<><<<v<v<v><vv>^^<vv<<vv<<<v<^>^^vv<v<>><<>>>^v<<>^>>>v^>v>^^<>^<vv<><^>v>^>>>><>^^>v^^v>^vv^^v^><<<>>v<>v<vv<vv^v^v<^v^<^^><<<><vv^^>^<^<<>v>>>>^<<v>v<v>vv<^><^<v><<^>v>>v><<v<<^v^<>>^>>>^v^v>v^^vv^>^<^^>>^><^vv^^vv^<>>^^^^<^^><><v<>>^>>^><vv^>^vvv<^<<v^^<<<>^><>>>^^<><v<v<><<v^^^^^<^<^<<>><<>>>>^<<>>>^<^v^>><<^>>>^<<v>^>><>^<v>^<><v>^v^^vv<><^>vv^^v^<^^^v^vvv^>><>>v<<vv<>>^<^vvv<<^^><vvv^^<v<>vv^^<<>><v>><^^vvv<<<^>^<><^>vv^><^<<>vv<<v>>vv>v>v^<vv><vv><<>^^^^v^^^^<v>^<<^><><^^v^>v>^>><^><<>v^<v>>>^vvv>>^<^<>^^v^vv^^v><<vv^<>>>v<<<>v>^<>v<<>v^>^<<><<><v<v<v<>v^>v<><^^>^<^v^^><^>vv>^>vv<v<^v>vv>^^><<>vv^>^v<<^<<^<<>v<v<^<v>v>>^><v^^v^v>>>><v^v^<<<vv<<^^<>>v^v<^v>v>^^^v<v><v^^^vv<>v^v<^<>v><><v^<>>vv>v><>v>^v<><<<<<<v<>>v^vv<<<<v<<v><^<>^>><>^^vv>^<^<<>vv>>vv<vvv>><><v<>><^<v>^><^<<v>><v><v>^<v>><>v^^^^v<v^^v<>^^vv<>v<>v>^vv^><v^<<^<>^<>^^^>v^>>>v><<^>>v<^v<>^^<v<><v^v<v>v<><v<vv><<>v<^<^>v<>v^>v>^^<<<^^vv^<><<<>>v>^^<>v>>>><v<v<^^^v<v<v^><<>v^v<>v>><<<<v^<><^<<^>^<vvv<v^^v>>v^vv^><^v^^<>^^><<v^>>vv>^<v^vv<^^v<>>vvv<^v^>>^<v<v>>^>^^<<^>^>^v><>>^<^^v>^>>^^<><>>>^^>^^vvv>v<^^<>v^v^^<v<<^<v^v^<<>v^v<v<<v<>>><<^^^>>v>^vv>^>^^v<>^^<>v^^<><v<v<vvv^<vv<<>v^><<><v<>vv<<^vvvv><<<v>v>v^>v^<>v^>^<v<vvv^>^<>^>^^v<>><<<><v<^^>^v<v>^^v^v<<<^v^<>^<>v>^^>v<v<v>v>^^<<<><<^>v<v<^vv^v><^^<<vv>^<<v><>^>>>>><v^v<<<^>^v^v<<v<>vvv<<>v>v>>^v^v^>><<<<>v^<v<><<>>>^>>^>><<v>
\ No newline at end of file
diff --git a/2015/03/puzzle-1.awk b/2015/03/puzzle-1.awk
new file mode 100644
index 0000000..13b1209
--- /dev/null
+++ b/2015/03/puzzle-1.awk
@@ -0,0 +1,6 @@
+BEGIN     { x = y = 1; homes[x][y] = 1; acc = 1 }
+$0 == "^" { if (!homes[x][++y]++) acc++; next }
+$0 == ">" { if (!homes[++x][y]++) acc++; next }
+$0 == "v" { if (!homes[x][--y]++) acc++; next }
+$0 == "<" { if (!homes[--x][y]++) acc++; next }
+END       { print acc }
diff --git a/2015/03/puzzle-2.awk b/2015/03/puzzle-2.awk
new file mode 100644
index 0000000..0857009
--- /dev/null
+++ b/2015/03/puzzle-2.awk
@@ -0,0 +1,11 @@
+BEGIN			{ sx = sy = rx = ry = 1; homes[sx][sy] = 1; acc = 1 }
+			{ santa = santa ? 0 : 1 }
+santa == 0 && $0 == "^"	{ if (!homes[rx][++ry]++) acc++; next }
+santa == 0 && $0 == ">"	{ if (!homes[++rx][ry]++) acc++; next }
+santa == 0 && $0 == "v"	{ if (!homes[rx][--ry]++) acc++; next }
+santa == 0 && $0 == "<"	{ if (!homes[--rx][ry]++) acc++; next }
+santa == 1 && $0 == "^"	{ if (!homes[sx][++sy]++) acc++; next }
+santa == 1 && $0 == ">"	{ if (!homes[++sx][sy]++) acc++; next }
+santa == 1 && $0 == "v"	{ if (!homes[sx][--sy]++) acc++; next }
+santa == 1 && $0 == "<"	{ if (!homes[--sx][sy]++) acc++; next }
+END			{ print acc }
diff --git a/2015/03/puzzles.sh b/2015/03/puzzles.sh
new file mode 100755
index 0000000..6007df1
--- /dev/null
+++ b/2015/03/puzzles.sh
@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+
+fold -w1 input | awk -f puzzle-1.awk
+fold -w1 input | awk -f puzzle-2.awk
diff --git a/2015/04/.gitignore b/2015/04/.gitignore
new file mode 100644
index 0000000..60d075d
--- /dev/null
+++ b/2015/04/.gitignore
@@ -0,0 +1 @@
+puzzle-[12]
diff --git a/2015/04/Makefile b/2015/04/Makefile
new file mode 100644
index 0000000..10ec8f9
--- /dev/null
+++ b/2015/04/Makefile
@@ -0,0 +1,7 @@
+all:
+	${CC} ${CFLAGS} -lmd -DINPUT=\"$$(cat input)\" -o puzzle-1 puzzles.c
+	${CC} ${CFLAGS} -lmd -DINPUT=\"$$(cat input)\" -DPART2 -o puzzle-2 puzzles.c
+
+.PHONY: clean
+clean:
+	rm -f puzzle-[12]
diff --git a/2015/04/input b/2015/04/input
new file mode 100644
index 0000000..bf3e46f
--- /dev/null
+++ b/2015/04/input
@@ -0,0 +1 @@
+bgvyzdsv
diff --git a/2015/04/puzzles.c b/2015/04/puzzles.c
new file mode 100644
index 0000000..22833a2
--- /dev/null
+++ b/2015/04/puzzles.c
@@ -0,0 +1,35 @@
+#include <sys/types.h>
+
+#include <md5.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define BUFFER 128
+#ifdef PART2
+	#define ZEROS     "000000"
+	#define NUM_ZEROS 6
+#else
+	#define ZEROS     "00000"
+	#define NUM_ZEROS 5
+#endif
+
+int
+main(void)
+{
+	unsigned int i = 0;
+	char buffer[MD5_DIGEST_STRING_LENGTH], digest[BUFFER];
+	MD5_CTX ctx;
+
+	do {
+		snprintf(digest, BUFFER, INPUT "%u", i);
+
+		MD5Init(&ctx);
+		MD5Update(&ctx, (uint8_t *) digest, strlen(digest));
+		MD5End(&ctx, buffer);
+	} while (strncmp(buffer, ZEROS, NUM_ZEROS) && ++i);
+
+	printf("%u\n", i);
+	return EXIT_SUCCESS;
+}
diff --git a/2015/05/input b/2015/05/input
new file mode 100644
index 0000000..a9b6e77
--- /dev/null
+++ b/2015/05/input
@@ -0,0 +1,1000 @@
+sszojmmrrkwuftyv
+isaljhemltsdzlum
+fujcyucsrxgatisb
+qiqqlmcgnhzparyg
+oijbmduquhfactbc
+jqzuvtggpdqcekgk
+zwqadogmpjmmxijf
+uilzxjythsqhwndh
+gtssqejjknzkkpvw
+wrggegukhhatygfi
+vhtcgqzerxonhsye
+tedlwzdjfppbmtdx
+iuvrelxiapllaxbg
+feybgiimfthtplui
+qxmmcnirvkzfrjwd
+vfarmltinsriqxpu
+oanqfyqirkraesfq
+xilodxfuxphuiiii
+yukhnchvjkfwcbiq
+bdaibcbzeuxqplop
+ivegnnpbiyxqsion
+ybahkbzpditgwdgt
+dmebdomwabxgtctu
+ibtvimgfaeonknoh
+jsqraroxudetmfyw
+dqdbcwtpintfcvuz
+tiyphjunlxddenpj
+fgqwjgntxagidhah
+nwenhxmakxqkeehg
+zdoheaxqpcnlhnen
+tfetfqojqcdzlpbm
+qpnxkuldeiituggg
+xwttlbdwxohahwar
+hjkwzadmtrkegzye
+koksqrqcfwcaxeof
+wulwmrptktliyxeq
+gyufbedqhhyqgqzj
+txpunzodohikzlmj
+jloqfuejfkemcrvu
+amnflshcheuddqtc
+pdvcsduggcogbiia
+yrioavgfmeafjpcz
+uyhbtmbutozzqfvq
+mwhgfwsgyuwcdzik
+auqylgxhmullxpaa
+lgelzivplaeoivzh
+uyvcepielfcmswoa
+qhirixgwkkccuzlp
+zoonniyosmkeejfg
+iayfetpixkedyana
+ictqeyzyqswdskiy
+ejsgqteafvmorwxe
+lhaiqrlqqwfbrqdx
+ydjyboqwhfpqfydc
+dwhttezyanrnbybv
+edgzkqeqkyojowvr
+rmjfdwsqamjqehdq
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diff --git a/2015/05/puzzle-1.sed b/2015/05/puzzle-1.sed
new file mode 100644
index 0000000..9cba7ad
--- /dev/null
+++ b/2015/05/puzzle-1.sed
@@ -0,0 +1,3 @@
+/ab\|cd\|pq\|xy/d
+/\(.\)\1/!d
+/\(.*[aeiou].*\)\{3\}/p
diff --git a/2015/05/puzzle-2.sed b/2015/05/puzzle-2.sed
new file mode 100644
index 0000000..908afdf
--- /dev/null
+++ b/2015/05/puzzle-2.sed
@@ -0,0 +1,2 @@
+/\(.\).\1/!d
+/\(..\).*\1/p
diff --git a/2015/05/puzzles.sh b/2015/05/puzzles.sh
new file mode 100755
index 0000000..57ddb11
--- /dev/null
+++ b/2015/05/puzzles.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env sh
+
+# Could do this with just grep(1) and skip using wc(1), but I am lazy
+
+sed -nf puzzle-1.sed input | wc -l
+sed -nf puzzle-2.sed input | wc -l
diff --git a/2015/06/input b/2015/06/input
new file mode 100644
index 0000000..495311e
--- /dev/null
+++ b/2015/06/input
@@ -0,0 +1,300 @@
+turn off 660,55 through 986,197
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diff --git a/2015/06/puzzle-1.awk b/2015/06/puzzle-1.awk
new file mode 100755
index 0000000..97165cf
--- /dev/null
+++ b/2015/06/puzzle-1.awk
@@ -0,0 +1,15 @@
+#!/usr/bin/env -S awk -f
+
+function setlights(val, toggle)
+{
+	for (i = from[1]; i <= to[1]; i++) {
+		for (j = from[2]; j <= to[2]; j++)
+			lights[i][j] = toggle ? (lights[i][j] ? 0 : 1) : val
+	}
+}
+
+$1 == "toggle" { split($2, from, ","); split($4, to, ","); setlights(0, 1) }
+$2 ~ /on|off/  { split($3, from, ","); split($5, to, ",") }
+$2 == "on"     { setlights(1, 0) }
+$2 == "off"    { setlights(0, 0) }
+END            { for (i = 0; i <= 999; i++) for (j = 0; j <= 999; j++) count += lights[i][j]; print count }
diff --git a/2015/06/puzzle-2.awk b/2015/06/puzzle-2.awk
new file mode 100755
index 0000000..97ae1f8
--- /dev/null
+++ b/2015/06/puzzle-2.awk
@@ -0,0 +1,17 @@
+#!/usr/bin/env -S awk -f
+
+function setlights(val)
+{
+	for (i = from[1]; i <= to[1]; i++) {
+		for (j = from[2]; j <= to[2]; j++) {
+			if (!(val == -1 && lights[i][j] == 0))
+				lights[i][j] += val
+		}
+	}
+}
+
+$1 == "toggle" { split($2, from, ","); split($4, to, ","); setlights(2) }
+$2 ~ /on|off/  { split($3, from, ","); split($5, to, ",") }
+$2 == "on"     { setlights(1) }
+$2 == "off"    { setlights(-1) }
+END            { for (i = 0; i <= 999; i++) for (j = 0; j <= 999; j++) count += lights[i][j]; print count }
diff --git a/2015/08/input b/2015/08/input
new file mode 100644
index 0000000..94538e7
--- /dev/null
+++ b/2015/08/input
@@ -0,0 +1,300 @@
+"qxfcsmh"
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diff --git a/2015/08/puzzle-1.sh b/2015/08/puzzle-1.sh
new file mode 100755
index 0000000..ee35d69
--- /dev/null
+++ b/2015/08/puzzle-1.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env sh
+
+X=$(tr -d '\n' <input | wc -c)
+Y=$(sed 's/\(^"\|"$\)//g; s/\\x[a-f0-9]\{2\}/./g; s/\\[\\"]/./g' input \
+	| tr -d '\n' \
+	| wc -c)
+expr $X - $Y
diff --git a/2015/08/puzzle-2.sh b/2015/08/puzzle-2.sh
new file mode 100755
index 0000000..a00f13f
--- /dev/null
+++ b/2015/08/puzzle-2.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env sh
+
+X=$(sed 's/\("\|\\\)/\\&/g; s/^/../' input \
+	| tr -d '\n' \
+	| wc -c)
+Y=$(tr -d '\n' <input | wc -c)
+expr $X - $Y
diff --git a/2015/10/.gitignore b/2015/10/.gitignore
new file mode 100644
index 0000000..3971a19
--- /dev/null
+++ b/2015/10/.gitignore
@@ -0,0 +1,2 @@
+puzzle-[12]
+tmp[12].go
diff --git a/2015/10/Makefile b/2015/10/Makefile
new file mode 100644
index 0000000..8d258e1
--- /dev/null
+++ b/2015/10/Makefile
@@ -0,0 +1,12 @@
+all:
+	m4 -D INPUT=\"$$(cat input)\" -D LOOPS=40 -U len puzzles.go >tmp1.go
+	m4 -D INPUT=\"$$(cat input)\" -D LOOPS=50 -U len puzzles.go >tmp2.go
+	go build tmp1.go
+	go build tmp2.go
+	mv tmp1 puzzle-1
+	mv tmp2 puzzle-2
+	rm tmp[12].go
+
+.PHONY: clean
+clean:
+	rm -f puzzle-[12] tmp[12].go
diff --git a/2015/10/README b/2015/10/README
new file mode 100644
index 0000000..1102d82
--- /dev/null
+++ b/2015/10/README
@@ -0,0 +1,10 @@
+======
+ NOTE
+======
+
+I did not come up with the shell script solution myself, that is why I also included the very slow
+Go solution. The shell script solution comes from this Reddit post:
+
+	https://www.reddit.com/r/adventofcode/comments/3w6h3m/comment/cxtsigs/
+
+I felt that this solution was just too epic, so I included it here.
diff --git a/2015/10/input b/2015/10/input
new file mode 100644
index 0000000..13dcd63
--- /dev/null
+++ b/2015/10/input
@@ -0,0 +1 @@
+3113322113
diff --git a/2015/10/puzzles.go b/2015/10/puzzles.go
new file mode 100644
index 0000000..65de02f
--- /dev/null
+++ b/2015/10/puzzles.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+)
+
+func process(num string) string {
+	var newnum string
+
+	for i := 0; i < len(num); {
+		c := num[i]
+		j := 0
+		for i < len(num) && num[i] == c {
+			i++
+			j++
+		}
+		newnum += strconv.Itoa(j)
+		newnum = string(append([]byte(newnum), c))
+	}
+
+	return newnum
+}
+
+func main() {
+	num := INPUT
+	for i := 0; i < LOOPS; i++ {
+		num = process(num)
+	}
+	fmt.Println(len(num))
+}
diff --git a/2015/10/puzzles.sh b/2015/10/puzzles.sh
new file mode 100755
index 0000000..291ac96
--- /dev/null
+++ b/2015/10/puzzles.sh
@@ -0,0 +1,13 @@
+#!/usr/bin/env sh
+
+output()
+{
+	echo $in | tr -d '\n' | wc -c
+}
+
+in=$(cat input)
+for i in $(seq 1 50); do
+	in=$(echo "$in" | fold -w1 | uniq -c | tr -d '\n ')
+	[ $i -eq 40 ] && output
+done
+output
diff --git a/2015/11/input b/2015/11/input
new file mode 100644
index 0000000..a45c477
--- /dev/null
+++ b/2015/11/input
@@ -0,0 +1 @@
+hepxcrrq
diff --git a/2015/11/puzzle-1 b/2015/11/puzzle-1
new file mode 100644
index 0000000..b0e5756
--- /dev/null
+++ b/2015/11/puzzle-1
@@ -0,0 +1,7 @@
+The starting string is "hepxcrrq"
+
+The string must contain two sets of non-overlapping duplicates, this is best done as having the last
+5 characters be "xxyzz". The first 3 characters aren't illegal, so we don't need to change them.
+This gives an end result of "hepxxyzz".
+
+QED. (I hope)
diff --git a/2015/11/puzzle-2 b/2015/11/puzzle-2
new file mode 100644
index 0000000..444ce35
--- /dev/null
+++ b/2015/11/puzzle-2
@@ -0,0 +1,9 @@
+This continues from the last puzzle, so our starting string is "hepxxyzz"
+
+Following the theme of the previous puzzle, we want to create an "xxyzz" pattern in the lowest
+amount of increments possible. Since the string currently ends in "xxyzz", we know that the next
+possible value we could have that satisfies this property is "aabcc". In order to go from "xxyzz" to
+"aabcc" however, you need to overflow which would increment the "p" to a "q". This gives an end
+result of "heqaabcc".
+
+QED.
diff --git a/2015/12/input b/2015/12/input
new file mode 100644
index 0000000..bd91fda
--- /dev/null
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diff --git a/2015/12/puzzle-1.sh b/2015/12/puzzle-1.sh
new file mode 100755
index 0000000..7b509fe
--- /dev/null
+++ b/2015/12/puzzle-1.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env sh
+
+tr -c '\-0-9' '\n' <input | squash | paste -sd+ | bc
diff --git a/2015/12/puzzle-2.sh b/2015/12/puzzle-2.sh
new file mode 100755
index 0000000..e97fc8a
--- /dev/null
+++ b/2015/12/puzzle-2.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env sh
+
+jq 'walk(if type == "object" then del(select(.[] == "red")) end)' input \
+	| tr -c '\-0-9' '\n' \
+	| squash \
+	| paste -sd+ \
+	| bc
diff --git a/2015/14/input b/2015/14/input
new file mode 100644
index 0000000..2af1170
--- /dev/null
+++ b/2015/14/input
@@ -0,0 +1,9 @@
+Vixen can fly 19 km/s for 7 seconds, but then must rest for 124 seconds.
+Rudolph can fly 3 km/s for 15 seconds, but then must rest for 28 seconds.
+Donner can fly 19 km/s for 9 seconds, but then must rest for 164 seconds.
+Blitzen can fly 19 km/s for 9 seconds, but then must rest for 158 seconds.
+Comet can fly 13 km/s for 7 seconds, but then must rest for 82 seconds.
+Cupid can fly 25 km/s for 6 seconds, but then must rest for 145 seconds.
+Dasher can fly 14 km/s for 3 seconds, but then must rest for 38 seconds.
+Dancer can fly 3 km/s for 16 seconds, but then must rest for 37 seconds.
+Prancer can fly 25 km/s for 6 seconds, but then must rest for 143 seconds.
diff --git a/2015/14/puzzle-1.bc b/2015/14/puzzle-1.bc
new file mode 100644
index 0000000..d36cafd
--- /dev/null
+++ b/2015/14/puzzle-1.bc
@@ -0,0 +1,25 @@
+/* Return the largest element from array `a` of length `l` */
+define max(a[], l)
+{
+	auto m, i
+	for (i = 0; i < l; i++) {
+		if (a[i] > m)
+			m = a[i]
+	}
+	return m
+}
+
+/* Return the kilometers traveled by a raindeer that flys with speed `s` km/s for `t` seconds before
+ * needing to rest for `r` seconds.
+ */
+define calc(s, t, r)
+{
+	auto a, d
+	while (d + t <= 2503) {
+		a += s * t
+		d += t + r
+	}
+	if (d < 2503)
+		a += s * (2503 - d)
+	return a
+}
diff --git a/2015/14/puzzle-2.bc b/2015/14/puzzle-2.bc
new file mode 100644
index 0000000..4a41277
--- /dev/null
+++ b/2015/14/puzzle-2.bc
@@ -0,0 +1,33 @@
+scale = 0
+
+/* Return the largest element from array `a` of length `l` */
+define max(a[], l)
+{
+	auto m, i
+	for (i = 0; i < l; i++) {
+		if (a[i] > m)
+			m = a[i]
+	}
+	return m
+}
+
+define calc(speed[], time[], rest[], n)
+{
+	auto i, j, k, p[], d[]
+	
+	for (i = 0; i < 2503; i++) {
+		for (j = k = 0; j < n; j++) {
+			if (i % (time[j] + rest[j]) < time[j])
+				d[j] += speed[j]
+			if (d[j] > k)
+				k = d[j]
+		}
+
+		for (j = 0; j < n; j++) {
+			if (d[j] == k)
+				p[j] += 1
+		}
+	}
+
+	return max(p[], n)
+}
diff --git a/2015/14/puzzles.sh b/2015/14/puzzles.sh
new file mode 100755
index 0000000..b55642d
--- /dev/null
+++ b/2015/14/puzzles.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env sh
+
+# I use bc-gh(1), but it's just Gavin Howards implementation of bc(1)
+
+sed -e 's|[^0-9]*\([0-9]*\)[^0-9]*\([0-9]*\)[^0-9]*\([0-9]*\).*|x[y++] = calc(\1, \2, \3)|' \
+    -e '$amax(x[], y)' input \
+	| bc-gh -q puzzle-1.bc
+
+sed -e 's|[^0-9]*\([0-9]*\)[^0-9]*\([0-9]*\)[^0-9]*\([0-9]*\).*|speed[n] = \1; time[n] = \2; rest[n++] = \3|' \
+    -e '$acalc(speed[], time[], rest[], n)' input \
+	| bc-gh -q puzzle-2.bc
diff --git a/2015/15/input b/2015/15/input
new file mode 100644
index 0000000..d1af06e
--- /dev/null
+++ b/2015/15/input
@@ -0,0 +1,4 @@
+Sugar: capacity 3, durability 0, flavor 0, texture -3, calories 2
+Sprinkles: capacity -3, durability 3, flavor 0, texture 0, calories 9
+Candy: capacity -1, durability 0, flavor 4, texture 0, calories 1
+Chocolate: capacity 0, durability 0, flavor -2, texture 2, calories 8
diff --git a/2015/15/puzzle-1.py b/2015/15/puzzle-1.py
new file mode 100755
index 0000000..806737c
--- /dev/null
+++ b/2015/15/puzzle-1.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+
+from math import prod
+import itertools
+import re
+
+
+def main() -> None:
+	data: list[list[int]] = []
+	with open("input", "r", encoding="utf-8") as f:
+		for line in f.readlines():
+			m = re.match(
+				r"[^\-0-9]+([\-0-9]+)[^\-0-9]+([\-0-9]+)[^\-0-9]+([\-0-9]+)[^\-0-9]+([\-0-9]+)",
+				line,
+			)
+			data.append([int(m.group(1)), int(m.group(2)), int(m.group(3)), int(m.group(4))])
+
+	total: int = 0
+	for i in range(100):
+		for j in range(100 - i):
+			for k in range(100 - i - j):
+				if i + j + k > 100:
+					continue
+				h = 100 - i - j - k
+
+				parts: list[int] = []
+				parts.append(data[0][0] * i + data[1][0] * j + data[2][0] * k + data[3][0] * h)
+				parts.append(data[0][1] * i + data[1][1] * j + data[2][1] * k + data[3][1] * h)
+				parts.append(data[0][2] * i + data[1][2] * j + data[2][2] * k + data[3][2] * h)
+				parts.append(data[0][3] * i + data[1][3] * j + data[2][3] * k + data[3][3] * h)
+
+				if not any(map(lambda x: x < 0, parts)):
+					total = max(total, prod(parts))
+
+	print(total)
+
+
+if __name__ == "__main__":
+	main()
diff --git a/2015/15/puzzle-2.py b/2015/15/puzzle-2.py
new file mode 100755
index 0000000..ec03a82
--- /dev/null
+++ b/2015/15/puzzle-2.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+
+from math import prod
+import itertools
+import re
+
+
+def main() -> None:
+	data: list[list[int]] = []
+	with open("input", "r", encoding="utf-8") as f:
+		for line in f.readlines():
+			m = re.match(
+				r"[^\-0-9]+([\-0-9]+)[^\-0-9]+([\-0-9]+)[^\-0-9]+([\-0-9]+)[^\-0-9]+([\-0-9]+)[^\-0-9]+([0-9]+)",
+				line,
+			)
+			data.append(list(map(int, [m.group(i) for i in range(1, 6)])))
+
+	total: int = 0
+	for i in range(100):
+		for j in range(100 - i):
+			for k in range(100 - i - j):
+				if i + j + k > 100:
+					continue
+				h = 100 - i - j - k
+				if data[0][4] * i + data[1][4] * j + data[2][4] * k + data[3][4] * h != 500:
+					continue
+
+				parts: list[int] = []
+				parts.append(data[0][0] * i + data[1][0] * j + data[2][0] * k + data[3][0] * h)
+				parts.append(data[0][1] * i + data[1][1] * j + data[2][1] * k + data[3][1] * h)
+				parts.append(data[0][2] * i + data[1][2] * j + data[2][2] * k + data[3][2] * h)
+				parts.append(data[0][3] * i + data[1][3] * j + data[2][3] * k + data[3][3] * h)
+
+				if not any(map(lambda x: x < 0, parts)):
+					total = max(total, prod(parts))
+
+	print(total)
+
+
+if __name__ == "__main__":
+	main()
diff --git a/2015/16/input b/2015/16/input
new file mode 100644
index 0000000..ddaeefc
--- /dev/null
+++ b/2015/16/input
@@ -0,0 +1,500 @@
+Sue 1: cars: 9, akitas: 3, goldfish: 0
+Sue 2: akitas: 9, children: 3, samoyeds: 9
+Sue 3: trees: 6, cars: 6, children: 4
+Sue 4: trees: 4, vizslas: 4, goldfish: 9
+Sue 5: akitas: 9, vizslas: 7, cars: 5
+Sue 6: vizslas: 6, goldfish: 6, akitas: 3
+Sue 7: pomeranians: 5, samoyeds: 0, perfumes: 10
+Sue 8: cars: 10, pomeranians: 7, goldfish: 8
+Sue 9: trees: 2, vizslas: 7, samoyeds: 6
+Sue 10: perfumes: 5, pomeranians: 4, children: 9
+Sue 11: vizslas: 5, perfumes: 8, cars: 10
+Sue 12: children: 10, cars: 6, perfumes: 5
+Sue 13: cats: 4, samoyeds: 7, pomeranians: 8
+Sue 14: perfumes: 6, goldfish: 10, children: 7
+Sue 15: perfumes: 4, pomeranians: 3, cars: 6
+Sue 16: perfumes: 7, cars: 9, pomeranians: 6
+Sue 17: goldfish: 3, cars: 6, vizslas: 7
+Sue 18: perfumes: 6, cars: 7, goldfish: 3
+Sue 19: trees: 0, akitas: 3, pomeranians: 8
+Sue 20: goldfish: 6, trees: 2, akitas: 6
+Sue 21: pomeranians: 9, akitas: 9, samoyeds: 9
+Sue 22: vizslas: 2, cars: 9, perfumes: 5
+Sue 23: goldfish: 10, samoyeds: 8, children: 9
+Sue 24: akitas: 4, goldfish: 1, vizslas: 5
+Sue 25: goldfish: 10, trees: 8, perfumes: 6
+Sue 26: vizslas: 5, akitas: 8, trees: 1
+Sue 27: trees: 3, cars: 6, perfumes: 2
+Sue 28: goldfish: 8, trees: 7, akitas: 10
+Sue 29: children: 5, trees: 1, goldfish: 10
+Sue 30: vizslas: 3, perfumes: 8, akitas: 3
+Sue 31: cars: 6, children: 10, perfumes: 7
+Sue 32: cars: 10, perfumes: 3, goldfish: 10
+Sue 33: perfumes: 9, vizslas: 3, akitas: 4
+Sue 34: perfumes: 10, vizslas: 7, children: 8
+Sue 35: cars: 5, perfumes: 5, vizslas: 9
+Sue 36: trees: 9, cars: 9, akitas: 7
+Sue 37: samoyeds: 9, perfumes: 2, cars: 10
+Sue 38: akitas: 7, cars: 5, trees: 5
+Sue 39: goldfish: 8, trees: 9, cars: 10
+Sue 40: trees: 0, cats: 1, pomeranians: 1
+Sue 41: pomeranians: 6, perfumes: 9, samoyeds: 1
+Sue 42: vizslas: 6, akitas: 3, pomeranians: 1
+Sue 43: vizslas: 2, perfumes: 3, pomeranians: 6
+Sue 44: akitas: 5, pomeranians: 0, vizslas: 10
+Sue 45: vizslas: 4, goldfish: 1, cars: 5
+Sue 46: cars: 4, vizslas: 8, cats: 0
+Sue 47: cats: 5, children: 8, pomeranians: 2
+Sue 48: vizslas: 3, perfumes: 6, cats: 0
+Sue 49: akitas: 7, perfumes: 0, trees: 7
+Sue 50: trees: 4, akitas: 10, vizslas: 2
+Sue 51: goldfish: 10, cars: 9, trees: 4
+Sue 52: cars: 5, children: 9, perfumes: 0
+Sue 53: vizslas: 5, cars: 3, cats: 8
+Sue 54: cars: 5, akitas: 1, goldfish: 10
+Sue 55: akitas: 10, vizslas: 2, cars: 6
+Sue 56: cats: 6, trees: 0, cars: 4
+Sue 57: vizslas: 1, akitas: 1, samoyeds: 7
+Sue 58: samoyeds: 6, vizslas: 1, akitas: 7
+Sue 59: akitas: 9, cars: 8, vizslas: 1
+Sue 60: cars: 6, vizslas: 7, goldfish: 0
+Sue 61: pomeranians: 5, akitas: 6, vizslas: 2
+Sue 62: samoyeds: 2, cats: 8, goldfish: 7
+Sue 63: vizslas: 10, goldfish: 7, samoyeds: 9
+Sue 64: perfumes: 2, trees: 1, akitas: 6
+Sue 65: cars: 8, perfumes: 10, vizslas: 9
+Sue 66: akitas: 8, vizslas: 8, perfumes: 8
+Sue 67: goldfish: 7, cars: 9, samoyeds: 9
+Sue 68: perfumes: 2, children: 7, akitas: 1
+Sue 69: perfumes: 7, vizslas: 9, akitas: 1
+Sue 70: samoyeds: 3, vizslas: 1, trees: 1
+Sue 71: vizslas: 8, goldfish: 7, trees: 9
+Sue 72: goldfish: 8, cars: 6, trees: 9
+Sue 73: perfumes: 5, cars: 10, samoyeds: 7
+Sue 74: pomeranians: 4, perfumes: 3, cars: 5
+Sue 75: samoyeds: 1, perfumes: 1, pomeranians: 1
+Sue 76: goldfish: 4, cats: 6, akitas: 7
+Sue 77: perfumes: 5, akitas: 4, vizslas: 8
+Sue 78: perfumes: 4, cats: 3, children: 4
+Sue 79: vizslas: 5, pomeranians: 9, samoyeds: 7
+Sue 80: cars: 3, samoyeds: 5, pomeranians: 7
+Sue 81: vizslas: 2, samoyeds: 4, perfumes: 2
+Sue 82: trees: 1, akitas: 10, vizslas: 9
+Sue 83: vizslas: 0, akitas: 2, samoyeds: 5
+Sue 84: perfumes: 5, vizslas: 7, children: 8
+Sue 85: cats: 3, children: 2, trees: 0
+Sue 86: cars: 3, perfumes: 2, goldfish: 2
+Sue 87: trees: 1, akitas: 7, vizslas: 0
+Sue 88: trees: 1, akitas: 2, samoyeds: 1
+Sue 89: cars: 4, vizslas: 8, akitas: 1
+Sue 90: perfumes: 5, cats: 3, vizslas: 0
+Sue 91: samoyeds: 7, cats: 6, goldfish: 8
+Sue 92: samoyeds: 10, cats: 0, cars: 7
+Sue 93: cars: 6, akitas: 7, samoyeds: 2
+Sue 94: perfumes: 0, goldfish: 6, trees: 9
+Sue 95: cars: 6, pomeranians: 2, samoyeds: 8
+Sue 96: cars: 2, trees: 9, samoyeds: 4
+Sue 97: goldfish: 5, trees: 1, children: 0
+Sue 98: akitas: 9, goldfish: 7, children: 6
+Sue 99: goldfish: 9, akitas: 0, pomeranians: 0
+Sue 100: samoyeds: 6, children: 8, vizslas: 5
+Sue 101: vizslas: 6, cars: 5, goldfish: 4
+Sue 102: vizslas: 6, akitas: 2, perfumes: 6
+Sue 103: samoyeds: 3, akitas: 7, children: 4
+Sue 104: cars: 3, perfumes: 10, cats: 6
+Sue 105: vizslas: 9, pomeranians: 0, cars: 1
+Sue 106: cats: 6, samoyeds: 8, pomeranians: 5
+Sue 107: cars: 7, trees: 4, akitas: 10
+Sue 108: perfumes: 3, vizslas: 1, goldfish: 9
+Sue 109: trees: 6, cars: 8, goldfish: 5
+Sue 110: pomeranians: 2, children: 1, vizslas: 7
+Sue 111: akitas: 0, vizslas: 8, cars: 0
+Sue 112: goldfish: 3, vizslas: 6, akitas: 2
+Sue 113: akitas: 10, pomeranians: 7, perfumes: 7
+Sue 114: cars: 10, cats: 2, vizslas: 8
+Sue 115: akitas: 8, trees: 1, vizslas: 2
+Sue 116: vizslas: 2, akitas: 7, perfumes: 1
+Sue 117: goldfish: 0, vizslas: 10, trees: 9
+Sue 118: trees: 3, cars: 0, goldfish: 0
+Sue 119: perfumes: 7, goldfish: 5, trees: 9
+Sue 120: children: 9, vizslas: 3, trees: 5
+Sue 121: vizslas: 1, goldfish: 7, akitas: 10
+Sue 122: perfumes: 1, cars: 6, trees: 1
+Sue 123: akitas: 2, vizslas: 0, goldfish: 7
+Sue 124: vizslas: 10, pomeranians: 7, akitas: 0
+Sue 125: perfumes: 4, cats: 5, vizslas: 2
+Sue 126: cars: 6, samoyeds: 8, akitas: 3
+Sue 127: trees: 9, goldfish: 7, akitas: 9
+Sue 128: cars: 8, trees: 0, perfumes: 2
+Sue 129: pomeranians: 7, vizslas: 2, perfumes: 6
+Sue 130: vizslas: 9, pomeranians: 3, trees: 6
+Sue 131: vizslas: 7, cars: 9, perfumes: 1
+Sue 132: akitas: 2, pomeranians: 9, vizslas: 7
+Sue 133: trees: 9, pomeranians: 10, samoyeds: 0
+Sue 134: children: 4, akitas: 10, perfumes: 4
+Sue 135: vizslas: 1, cats: 1, trees: 8
+Sue 136: samoyeds: 7, cars: 8, goldfish: 5
+Sue 137: perfumes: 0, children: 1, pomeranians: 10
+Sue 138: vizslas: 4, perfumes: 5, cars: 5
+Sue 139: trees: 2, perfumes: 8, goldfish: 0
+Sue 140: cars: 10, akitas: 5, goldfish: 7
+Sue 141: children: 4, trees: 3, goldfish: 8
+Sue 142: cars: 8, perfumes: 6, trees: 7
+Sue 143: akitas: 6, goldfish: 0, trees: 10
+Sue 144: akitas: 7, pomeranians: 10, perfumes: 10
+Sue 145: trees: 10, vizslas: 3, goldfish: 4
+Sue 146: samoyeds: 4, akitas: 3, perfumes: 6
+Sue 147: akitas: 8, perfumes: 2, pomeranians: 10
+Sue 148: cars: 2, perfumes: 0, goldfish: 8
+Sue 149: goldfish: 6, akitas: 7, perfumes: 6
+Sue 150: cars: 2, pomeranians: 5, perfumes: 4
+Sue 151: goldfish: 1, cars: 5, trees: 0
+Sue 152: pomeranians: 4, cars: 7, children: 1
+Sue 153: goldfish: 8, cars: 1, children: 10
+Sue 154: cars: 6, perfumes: 8, trees: 1
+Sue 155: akitas: 4, perfumes: 6, pomeranians: 2
+Sue 156: pomeranians: 5, cars: 4, akitas: 1
+Sue 157: cats: 5, cars: 9, goldfish: 8
+Sue 158: vizslas: 5, samoyeds: 1, children: 7
+Sue 159: vizslas: 1, perfumes: 3, akitas: 1
+Sue 160: goldfish: 10, pomeranians: 9, perfumes: 5
+Sue 161: samoyeds: 3, trees: 7, cars: 2
+Sue 162: cars: 2, pomeranians: 1, vizslas: 6
+Sue 163: vizslas: 3, perfumes: 5, akitas: 6
+Sue 164: vizslas: 1, trees: 0, akitas: 5
+Sue 165: vizslas: 5, cars: 6, pomeranians: 8
+Sue 166: cars: 10, perfumes: 2, trees: 9
+Sue 167: cars: 10, pomeranians: 6, perfumes: 4
+Sue 168: akitas: 7, trees: 10, goldfish: 7
+Sue 169: akitas: 1, perfumes: 10, cars: 10
+Sue 170: akitas: 5, samoyeds: 8, vizslas: 6
+Sue 171: children: 3, akitas: 2, vizslas: 3
+Sue 172: goldfish: 5, vizslas: 5, perfumes: 9
+Sue 173: perfumes: 5, goldfish: 10, trees: 5
+Sue 174: akitas: 5, vizslas: 2, children: 7
+Sue 175: perfumes: 5, cars: 7, samoyeds: 2
+Sue 176: cars: 8, vizslas: 10, akitas: 7
+Sue 177: perfumes: 7, children: 8, goldfish: 7
+Sue 178: cars: 1, pomeranians: 9, samoyeds: 0
+Sue 179: perfumes: 6, cars: 2, trees: 6
+Sue 180: trees: 3, vizslas: 7, children: 3
+Sue 181: vizslas: 8, samoyeds: 2, trees: 9
+Sue 182: perfumes: 3, cats: 1, children: 5
+Sue 183: akitas: 9, cats: 6, children: 3
+Sue 184: pomeranians: 9, cars: 6, perfumes: 8
+Sue 185: vizslas: 9, trees: 0, akitas: 9
+Sue 186: perfumes: 6, cars: 5, goldfish: 5
+Sue 187: perfumes: 4, cats: 7, vizslas: 2
+Sue 188: akitas: 7, cars: 4, children: 10
+Sue 189: akitas: 0, goldfish: 7, vizslas: 5
+Sue 190: akitas: 5, cars: 5, cats: 6
+Sue 191: cars: 6, children: 0, perfumes: 3
+Sue 192: cats: 2, perfumes: 10, goldfish: 7
+Sue 193: trees: 1, perfumes: 0, cars: 8
+Sue 194: perfumes: 9, children: 4, cats: 6
+Sue 195: akitas: 7, trees: 3, goldfish: 6
+Sue 196: goldfish: 8, cars: 8, samoyeds: 0
+Sue 197: cats: 0, akitas: 10, vizslas: 0
+Sue 198: goldfish: 1, perfumes: 3, cars: 8
+Sue 199: akitas: 10, vizslas: 5, samoyeds: 6
+Sue 200: pomeranians: 9, goldfish: 9, samoyeds: 7
+Sue 201: samoyeds: 0, goldfish: 7, akitas: 6
+Sue 202: vizslas: 0, goldfish: 2, akitas: 1
+Sue 203: goldfish: 3, children: 0, vizslas: 8
+Sue 204: cars: 8, trees: 2, perfumes: 2
+Sue 205: cars: 4, perfumes: 5, goldfish: 8
+Sue 206: vizslas: 3, trees: 2, akitas: 1
+Sue 207: cars: 7, goldfish: 5, trees: 1
+Sue 208: goldfish: 1, cars: 6, vizslas: 8
+Sue 209: cats: 4, trees: 1, children: 0
+Sue 210: cats: 10, children: 0, perfumes: 0
+Sue 211: cars: 4, pomeranians: 7, samoyeds: 5
+Sue 212: cars: 2, pomeranians: 10, trees: 1
+Sue 213: trees: 10, cats: 5, cars: 10
+Sue 214: perfumes: 5, trees: 1, vizslas: 1
+Sue 215: akitas: 10, vizslas: 8, samoyeds: 8
+Sue 216: vizslas: 2, cats: 5, pomeranians: 3
+Sue 217: akitas: 10, perfumes: 0, cats: 10
+Sue 218: trees: 8, cats: 5, vizslas: 2
+Sue 219: goldfish: 10, perfumes: 8, children: 2
+Sue 220: samoyeds: 9, trees: 8, vizslas: 7
+Sue 221: children: 7, trees: 6, cars: 6
+Sue 222: cats: 4, akitas: 5, pomeranians: 0
+Sue 223: trees: 8, goldfish: 2, perfumes: 8
+Sue 224: pomeranians: 9, cars: 8, akitas: 5
+Sue 225: akitas: 10, vizslas: 0, trees: 2
+Sue 226: akitas: 8, cats: 6, cars: 7
+Sue 227: trees: 1, akitas: 3, goldfish: 4
+Sue 228: pomeranians: 6, cats: 3, goldfish: 3
+Sue 229: trees: 10, perfumes: 3, vizslas: 7
+Sue 230: perfumes: 8, cars: 7, akitas: 0
+Sue 231: perfumes: 10, goldfish: 4, cars: 6
+Sue 232: goldfish: 7, trees: 3, cats: 2
+Sue 233: perfumes: 6, trees: 4, akitas: 4
+Sue 234: goldfish: 9, cats: 4, cars: 7
+Sue 235: pomeranians: 6, vizslas: 0, akitas: 6
+Sue 236: samoyeds: 5, cars: 5, children: 4
+Sue 237: vizslas: 10, cars: 4, goldfish: 4
+Sue 238: goldfish: 3, samoyeds: 7, akitas: 2
+Sue 239: cats: 8, children: 2, vizslas: 7
+Sue 240: cars: 9, perfumes: 4, trees: 9
+Sue 241: trees: 8, vizslas: 2, goldfish: 5
+Sue 242: cars: 6, trees: 3, vizslas: 3
+Sue 243: cats: 6, children: 7, cars: 4
+Sue 244: cats: 10, perfumes: 2, goldfish: 7
+Sue 245: akitas: 8, cats: 10, perfumes: 8
+Sue 246: vizslas: 8, akitas: 5, perfumes: 10
+Sue 247: goldfish: 2, vizslas: 5, akitas: 7
+Sue 248: akitas: 3, perfumes: 0, trees: 10
+Sue 249: cats: 4, vizslas: 5, pomeranians: 6
+Sue 250: children: 3, vizslas: 7, perfumes: 2
+Sue 251: cars: 0, pomeranians: 10, perfumes: 0
+Sue 252: akitas: 0, goldfish: 9, cars: 6
+Sue 253: perfumes: 7, cars: 4, samoyeds: 5
+Sue 254: akitas: 9, trees: 10, cars: 4
+Sue 255: samoyeds: 10, children: 6, akitas: 7
+Sue 256: trees: 8, goldfish: 8, perfumes: 8
+Sue 257: goldfish: 3, akitas: 2, perfumes: 6
+Sue 258: cats: 7, trees: 0, vizslas: 1
+Sue 259: perfumes: 7, cars: 7, akitas: 7
+Sue 260: goldfish: 0, vizslas: 0, samoyeds: 2
+Sue 261: vizslas: 2, children: 2, cats: 3
+Sue 262: vizslas: 2, pomeranians: 9, samoyeds: 3
+Sue 263: cats: 1, akitas: 3, vizslas: 1
+Sue 264: pomeranians: 10, trees: 2, goldfish: 7
+Sue 265: samoyeds: 5, trees: 7, perfumes: 4
+Sue 266: perfumes: 10, cars: 1, pomeranians: 3
+Sue 267: trees: 6, goldfish: 1, cars: 0
+Sue 268: cars: 6, samoyeds: 4, pomeranians: 5
+Sue 269: goldfish: 3, vizslas: 3, akitas: 3
+Sue 270: children: 5, cats: 0, cars: 4
+Sue 271: goldfish: 3, perfumes: 8, pomeranians: 7
+Sue 272: samoyeds: 6, cars: 7, perfumes: 10
+Sue 273: trees: 4, cars: 2, vizslas: 7
+Sue 274: samoyeds: 10, perfumes: 9, goldfish: 6
+Sue 275: cars: 4, trees: 2, perfumes: 7
+Sue 276: akitas: 3, perfumes: 9, cars: 9
+Sue 277: akitas: 8, vizslas: 2, cats: 6
+Sue 278: trees: 5, goldfish: 7, akitas: 3
+Sue 279: perfumes: 9, cars: 8, vizslas: 2
+Sue 280: trees: 3, vizslas: 0, children: 0
+Sue 281: cars: 7, trees: 2, cats: 5
+Sue 282: vizslas: 4, cars: 10, cats: 3
+Sue 283: akitas: 10, cats: 3, samoyeds: 9
+Sue 284: trees: 7, children: 5, goldfish: 6
+Sue 285: cars: 2, perfumes: 5, cats: 7
+Sue 286: samoyeds: 5, trees: 10, goldfish: 6
+Sue 287: goldfish: 10, perfumes: 4, trees: 7
+Sue 288: vizslas: 9, trees: 9, perfumes: 0
+Sue 289: trees: 4, goldfish: 9, vizslas: 8
+Sue 290: vizslas: 3, cars: 3, trees: 2
+Sue 291: goldfish: 2, akitas: 2, trees: 2
+Sue 292: children: 1, cars: 0, vizslas: 5
+Sue 293: trees: 5, akitas: 4, goldfish: 6
+Sue 294: akitas: 3, vizslas: 7, pomeranians: 5
+Sue 295: goldfish: 10, vizslas: 3, trees: 1
+Sue 296: cars: 2, trees: 1, akitas: 0
+Sue 297: akitas: 10, vizslas: 6, samoyeds: 2
+Sue 298: children: 5, trees: 1, samoyeds: 9
+Sue 299: perfumes: 9, trees: 6, vizslas: 1
+Sue 300: akitas: 7, pomeranians: 6, vizslas: 6
+Sue 301: cats: 7, children: 6, vizslas: 7
+Sue 302: trees: 2, vizslas: 7, samoyeds: 4
+Sue 303: goldfish: 0, samoyeds: 10, cars: 4
+Sue 304: pomeranians: 9, children: 3, vizslas: 5
+Sue 305: akitas: 8, vizslas: 4, cars: 5
+Sue 306: akitas: 0, perfumes: 2, pomeranians: 10
+Sue 307: akitas: 9, cars: 0, trees: 2
+Sue 308: vizslas: 10, goldfish: 8, akitas: 6
+Sue 309: trees: 0, cats: 6, perfumes: 2
+Sue 310: vizslas: 10, cars: 1, trees: 4
+Sue 311: goldfish: 8, perfumes: 6, cats: 3
+Sue 312: goldfish: 0, children: 1, akitas: 2
+Sue 313: pomeranians: 10, trees: 6, samoyeds: 6
+Sue 314: vizslas: 5, akitas: 4, pomeranians: 2
+Sue 315: goldfish: 7, trees: 0, akitas: 5
+Sue 316: goldfish: 4, vizslas: 5, cars: 7
+Sue 317: perfumes: 7, cats: 10, cars: 4
+Sue 318: samoyeds: 10, cars: 9, trees: 7
+Sue 319: pomeranians: 8, vizslas: 6, cars: 3
+Sue 320: cars: 4, cats: 9, akitas: 4
+Sue 321: cars: 6, trees: 2, perfumes: 6
+Sue 322: goldfish: 1, cats: 2, perfumes: 4
+Sue 323: akitas: 6, cats: 5, cars: 8
+Sue 324: cats: 4, vizslas: 9, akitas: 0
+Sue 325: children: 8, samoyeds: 9, trees: 4
+Sue 326: vizslas: 2, samoyeds: 10, perfumes: 7
+Sue 327: goldfish: 7, pomeranians: 4, akitas: 10
+Sue 328: perfumes: 8, cats: 4, akitas: 10
+Sue 329: trees: 0, cars: 9, goldfish: 3
+Sue 330: trees: 5, samoyeds: 7, perfumes: 8
+Sue 331: cars: 4, perfumes: 2, goldfish: 0
+Sue 332: vizslas: 4, pomeranians: 7, akitas: 1
+Sue 333: akitas: 4, goldfish: 3, perfumes: 0
+Sue 334: samoyeds: 3, akitas: 10, vizslas: 0
+Sue 335: goldfish: 1, akitas: 7, vizslas: 6
+Sue 336: perfumes: 1, goldfish: 1, pomeranians: 8
+Sue 337: children: 5, cars: 4, cats: 4
+Sue 338: vizslas: 5, cars: 10, cats: 3
+Sue 339: trees: 2, goldfish: 3, cars: 1
+Sue 340: trees: 10, goldfish: 6, perfumes: 2
+Sue 341: akitas: 5, trees: 6, cats: 3
+Sue 342: cars: 10, children: 8, goldfish: 0
+Sue 343: cats: 2, akitas: 0, pomeranians: 4
+Sue 344: perfumes: 1, vizslas: 3, cars: 3
+Sue 345: samoyeds: 8, cats: 5, perfumes: 8
+Sue 346: cars: 5, akitas: 10, trees: 2
+Sue 347: vizslas: 9, akitas: 9, cars: 3
+Sue 348: cars: 3, perfumes: 1, pomeranians: 9
+Sue 349: akitas: 1, cars: 4, perfumes: 0
+Sue 350: perfumes: 8, vizslas: 2, trees: 6
+Sue 351: pomeranians: 5, akitas: 9, cats: 8
+Sue 352: pomeranians: 8, vizslas: 3, goldfish: 10
+Sue 353: trees: 2, pomeranians: 0, goldfish: 6
+Sue 354: cats: 5, akitas: 7, goldfish: 6
+Sue 355: goldfish: 6, children: 4, trees: 10
+Sue 356: children: 1, trees: 3, akitas: 7
+Sue 357: trees: 2, samoyeds: 10, goldfish: 3
+Sue 358: samoyeds: 10, cats: 0, goldfish: 0
+Sue 359: perfumes: 3, children: 6, pomeranians: 1
+Sue 360: cars: 10, pomeranians: 1, samoyeds: 5
+Sue 361: samoyeds: 9, pomeranians: 7, perfumes: 6
+Sue 362: goldfish: 6, trees: 8, perfumes: 9
+Sue 363: samoyeds: 10, pomeranians: 9, children: 10
+Sue 364: perfumes: 3, goldfish: 7, cars: 9
+Sue 365: cats: 3, children: 4, samoyeds: 8
+Sue 366: trees: 0, cars: 10, vizslas: 10
+Sue 367: pomeranians: 10, children: 8, perfumes: 2
+Sue 368: cars: 5, vizslas: 0, samoyeds: 3
+Sue 369: trees: 1, goldfish: 8, cars: 8
+Sue 370: vizslas: 0, cars: 2, perfumes: 5
+Sue 371: trees: 2, cars: 3, vizslas: 8
+Sue 372: trees: 10, children: 9, cats: 1
+Sue 373: pomeranians: 3, perfumes: 1, vizslas: 0
+Sue 374: vizslas: 0, perfumes: 6, trees: 0
+Sue 375: vizslas: 7, pomeranians: 1, akitas: 10
+Sue 376: vizslas: 8, trees: 2, cars: 10
+Sue 377: perfumes: 9, cats: 5, goldfish: 5
+Sue 378: cats: 0, akitas: 10, perfumes: 9
+Sue 379: cars: 4, akitas: 1, trees: 1
+Sue 380: cars: 4, perfumes: 5, trees: 3
+Sue 381: goldfish: 3, akitas: 5, samoyeds: 9
+Sue 382: goldfish: 7, perfumes: 5, trees: 5
+Sue 383: akitas: 4, cats: 6, cars: 8
+Sue 384: children: 6, goldfish: 10, akitas: 7
+Sue 385: akitas: 7, vizslas: 5, perfumes: 10
+Sue 386: children: 7, vizslas: 10, akitas: 10
+Sue 387: goldfish: 6, akitas: 7, trees: 2
+Sue 388: vizslas: 6, trees: 1, akitas: 2
+Sue 389: cars: 5, vizslas: 3, akitas: 7
+Sue 390: vizslas: 4, cats: 8, perfumes: 7
+Sue 391: akitas: 3, trees: 0, children: 2
+Sue 392: cats: 7, cars: 3, children: 9
+Sue 393: trees: 10, vizslas: 3, goldfish: 7
+Sue 394: perfumes: 0, goldfish: 7, akitas: 4
+Sue 395: cats: 6, cars: 7, vizslas: 0
+Sue 396: vizslas: 4, perfumes: 6, goldfish: 5
+Sue 397: pomeranians: 8, trees: 1, akitas: 9
+Sue 398: goldfish: 7, pomeranians: 6, samoyeds: 9
+Sue 399: perfumes: 10, cars: 1, trees: 8
+Sue 400: trees: 0, goldfish: 9, children: 6
+Sue 401: trees: 1, cars: 6, pomeranians: 8
+Sue 402: perfumes: 9, cars: 0, vizslas: 10
+Sue 403: samoyeds: 4, akitas: 1, vizslas: 9
+Sue 404: perfumes: 0, trees: 2, cars: 4
+Sue 405: akitas: 0, perfumes: 5, samoyeds: 4
+Sue 406: akitas: 8, vizslas: 6, children: 2
+Sue 407: children: 1, trees: 8, goldfish: 10
+Sue 408: pomeranians: 4, trees: 10, cars: 9
+Sue 409: perfumes: 5, vizslas: 5, akitas: 4
+Sue 410: trees: 1, akitas: 10, vizslas: 6
+Sue 411: samoyeds: 0, goldfish: 9, perfumes: 7
+Sue 412: goldfish: 7, samoyeds: 10, trees: 1
+Sue 413: samoyeds: 0, pomeranians: 10, vizslas: 6
+Sue 414: children: 2, cars: 10, samoyeds: 2
+Sue 415: trees: 2, goldfish: 8, cars: 0
+Sue 416: samoyeds: 4, goldfish: 9, trees: 2
+Sue 417: trees: 8, akitas: 10, perfumes: 3
+Sue 418: samoyeds: 9, goldfish: 2, cars: 1
+Sue 419: akitas: 2, perfumes: 8, trees: 2
+Sue 420: children: 3, goldfish: 6, perfumes: 5
+Sue 421: akitas: 8, perfumes: 2, samoyeds: 6
+Sue 422: vizslas: 10, akitas: 4, pomeranians: 3
+Sue 423: cats: 8, perfumes: 3, trees: 4
+Sue 424: cars: 2, children: 4, pomeranians: 8
+Sue 425: pomeranians: 4, samoyeds: 2, goldfish: 4
+Sue 426: perfumes: 6, cars: 4, goldfish: 4
+Sue 427: akitas: 0, goldfish: 7, perfumes: 5
+Sue 428: perfumes: 4, cars: 3, akitas: 5
+Sue 429: trees: 0, vizslas: 0, goldfish: 1
+Sue 430: perfumes: 4, vizslas: 2, cars: 7
+Sue 431: goldfish: 7, pomeranians: 8, trees: 0
+Sue 432: goldfish: 7, children: 9, trees: 3
+Sue 433: akitas: 1, vizslas: 10, trees: 2
+Sue 434: perfumes: 2, cars: 4, goldfish: 10
+Sue 435: pomeranians: 6, vizslas: 9, trees: 1
+Sue 436: cars: 9, trees: 0, goldfish: 0
+Sue 437: trees: 1, goldfish: 1, vizslas: 8
+Sue 438: goldfish: 7, samoyeds: 8, children: 2
+Sue 439: children: 1, cats: 7, vizslas: 8
+Sue 440: cats: 2, pomeranians: 6, goldfish: 4
+Sue 441: perfumes: 7, cats: 3, vizslas: 6
+Sue 442: akitas: 4, samoyeds: 5, cars: 2
+Sue 443: akitas: 3, perfumes: 3, cats: 9
+Sue 444: perfumes: 10, akitas: 6, trees: 0
+Sue 445: cars: 5, children: 9, perfumes: 8
+Sue 446: vizslas: 10, cars: 3, perfumes: 5
+Sue 447: children: 9, perfumes: 1, cars: 10
+Sue 448: akitas: 0, goldfish: 8, trees: 3
+Sue 449: cars: 7, akitas: 8, children: 3
+Sue 450: cars: 4, akitas: 9, cats: 0
+Sue 451: perfumes: 4, samoyeds: 5, goldfish: 6
+Sue 452: perfumes: 10, akitas: 1, cars: 7
+Sue 453: trees: 1, goldfish: 3, vizslas: 6
+Sue 454: goldfish: 8, pomeranians: 6, trees: 10
+Sue 455: akitas: 5, vizslas: 8, goldfish: 10
+Sue 456: cats: 5, trees: 4, samoyeds: 0
+Sue 457: perfumes: 8, cars: 0, cats: 3
+Sue 458: akitas: 1, trees: 10, vizslas: 2
+Sue 459: vizslas: 6, akitas: 3, children: 10
+Sue 460: perfumes: 7, trees: 9, goldfish: 8
+Sue 461: children: 6, vizslas: 4, perfumes: 5
+Sue 462: vizslas: 6, akitas: 8, perfumes: 9
+Sue 463: goldfish: 8, cars: 4, trees: 10
+Sue 464: pomeranians: 8, cars: 5, vizslas: 0
+Sue 465: cats: 10, goldfish: 7, akitas: 1
+Sue 466: cats: 2, children: 1, cars: 6
+Sue 467: perfumes: 3, samoyeds: 6, cars: 0
+Sue 468: samoyeds: 10, pomeranians: 6, trees: 2
+Sue 469: children: 2, perfumes: 2, pomeranians: 4
+Sue 470: cats: 1, perfumes: 5, vizslas: 9
+Sue 471: vizslas: 5, perfumes: 2, akitas: 7
+Sue 472: samoyeds: 8, goldfish: 6, cats: 1
+Sue 473: goldfish: 10, perfumes: 9, cars: 4
+Sue 474: samoyeds: 0, cars: 4, vizslas: 4
+Sue 475: trees: 2, cars: 7, akitas: 8
+Sue 476: vizslas: 3, perfumes: 5, goldfish: 1
+Sue 477: cats: 7, cars: 4, trees: 1
+Sue 478: vizslas: 8, akitas: 3, goldfish: 0
+Sue 479: cars: 6, cats: 3, perfumes: 2
+Sue 480: goldfish: 1, children: 9, vizslas: 3
+Sue 481: pomeranians: 5, vizslas: 1, cars: 10
+Sue 482: children: 5, perfumes: 5, cats: 1
+Sue 483: perfumes: 2, goldfish: 7, trees: 6
+Sue 484: akitas: 2, goldfish: 4, perfumes: 10
+Sue 485: samoyeds: 3, goldfish: 0, akitas: 1
+Sue 486: trees: 8, vizslas: 9, goldfish: 0
+Sue 487: goldfish: 8, samoyeds: 0, trees: 0
+Sue 488: perfumes: 7, cars: 5, trees: 0
+Sue 489: vizslas: 3, pomeranians: 2, perfumes: 5
+Sue 490: cars: 5, perfumes: 5, akitas: 5
+Sue 491: children: 8, trees: 1, pomeranians: 4
+Sue 492: pomeranians: 0, akitas: 1, vizslas: 8
+Sue 493: akitas: 10, perfumes: 10, samoyeds: 8
+Sue 494: perfumes: 6, vizslas: 4, cats: 6
+Sue 495: children: 6, pomeranians: 5, samoyeds: 4
+Sue 496: vizslas: 1, trees: 5, akitas: 1
+Sue 497: vizslas: 10, perfumes: 10, pomeranians: 3
+Sue 498: samoyeds: 3, trees: 2, cars: 5
+Sue 499: cats: 6, children: 3, perfumes: 0
+Sue 500: pomeranians: 10, cats: 3, vizslas: 5
diff --git a/2015/16/puzzle-1.sh b/2015/16/puzzle-1.sh
new file mode 100755
index 0000000..3550231
--- /dev/null
+++ b/2015/16/puzzle-1.sh
@@ -0,0 +1,25 @@
+#!/usr/bin/env sh
+
+# Definitely there is a better way to do this, but this is fine
+# Original solution was just me using regex in vim lol
+
+sed '/children/!s/$/, children: 3/' input \
+	| sed '/cats/!s/$/, cats: 7/' \
+	| sed '/samoyeds/!s/$/, samoyeds: 2/' \
+	| sed '/pomeranians/!s/$/, pomeranians: 3/' \
+	| sed '/akitas/!s/$/, akitas: 0/' \
+	| sed '/vizslas/!s/$/, vizslas: 0/' \
+	| sed '/goldfish/!s/$/, goldfish: 5/' \
+	| sed '/trees/!s/$/, trees: 3/' \
+	| sed '/cars/!s/$/, cars: 2/' \
+	| sed '/perfumes/!s/$/, perfumes: 1/' \
+	| grep 'children: 3' \
+	| grep 'cats: 7' \
+	| grep 'samoyeds: 2' \
+	| grep 'pomeranians: 3' \
+	| grep 'akitas: 0' \
+	| grep 'vizslas: 0' \
+	| grep 'goldfish: 5' \
+	| grep 'trees: 3' \
+	| grep 'cars: 2' \
+	| sed -n '/perfumes: 1/s/Sue \([0-9]*\).*/\1/p'
diff --git a/2015/16/puzzle-2.sh b/2015/16/puzzle-2.sh
new file mode 100755
index 0000000..e854c7c
--- /dev/null
+++ b/2015/16/puzzle-2.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env sh
+
+# Definitely there is a better way to do this, but this is fine
+# Original solution was just me using regex in vim lol
+
+sed '/children/!s/$/, children: 3/' input \
+	| sed '/cats/!s/$/, cats: 8/' \
+	| sed '/samoyeds/!s/$/, samoyeds: 2/' \
+	| sed '/pomeranians/!s/$/, pomeranians: 2/' \
+	| sed '/akitas/!s/$/, akitas: 0/' \
+	| sed '/vizslas/!s/$/, vizslas: 0/' \
+	| sed '/goldfish/!s/$/, goldfish: 4/' \
+	| sed '/trees/!s/$/, trees: 4/' \
+	| sed '/cars/!s/$/, cars: 2/' \
+	| sed '/perfumes/!s/$/, perfumes: 1/' \
+	| sed 's/$/ /' \
+	| grep 'children: 3' \
+	| grep 'samoyeds: 2' \
+	| grep 'akitas: 0' \
+	| grep 'vizslas: 0' \
+	| grep 'cars: 2' \
+	| grep 'perfumes: 1' \
+	| grep 'goldfish: [0-4][ ,]' \
+	| grep 'pomeranians: [0-2][ ,]' \
+	| grep 'cats: \([8-9]\|[1-9][0-9]\)' \
+	| sed -n '/trees: \([4-9]\|[1-9][0-9]\)/s/Sue \([0-9]*\).*/\1/p'
diff --git a/2015/17/input b/2015/17/input
new file mode 100644
index 0000000..09ebd46
--- /dev/null
+++ b/2015/17/input
@@ -0,0 +1,20 @@
+43
+3
+4
+10
+21
+44
+4
+6
+47
+41
+34
+17
+17
+44
+36
+31
+46
+9
+27
+38
diff --git a/2015/17/puzzle-1.py b/2015/17/puzzle-1.py
new file mode 100755
index 0000000..b201e5b
--- /dev/null
+++ b/2015/17/puzzle-1.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+
+import itertools
+
+
+def main() -> None:
+	with open("input", "r", encoding="utf-8") as f:
+		nums = list(map(int, f.readlines()))
+
+	combs: list[tuple[int, ...]] = []
+	for n in range(len(nums) + 1):
+		combs += list(itertools.combinations(nums, n))
+
+	print(len(list(filter(lambda x: sum(x) == 150, combs))))
+
+
+if __name__ == "__main__":
+	main()
diff --git a/2015/17/puzzle-2.py b/2015/17/puzzle-2.py
new file mode 100755
index 0000000..43f8922
--- /dev/null
+++ b/2015/17/puzzle-2.py
@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+
+import itertools
+
+
+def main() -> None:
+	with open("input", "r", encoding="utf-8") as f:
+		nums = list(map(int, f.readlines()))
+
+	combs: list[tuple[int, ...]] = []
+	for n in range(len(nums) + 1):
+		combs += list(itertools.combinations(nums, n))
+
+	combs = list(filter(lambda x: sum(x) == 150, combs))
+	conts = min(map(len, combs))
+	print(len(list(filter(lambda x: len(x) == conts, combs))))
+
+
+if __name__ == "__main__":
+	main()
diff --git a/2015/18/input b/2015/18/input
new file mode 100644
index 0000000..5efaa1b
--- /dev/null
+++ b/2015/18/input
@@ -0,0 +1,100 @@
+#...##......#......##.##..#...##......##.#.#.###.#.#..#..#......####..#......###.#.#....#..##..###..
+####..#.#...#....#.#####.##.##.#..#.......#....#.##...###.###..#.#.#........#..#.#.##...##..#.####.#
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diff --git a/2015/18/puzzle-1.py b/2015/18/puzzle-1.py
new file mode 100755
index 0000000..ef6d36e
--- /dev/null
+++ b/2015/18/puzzle-1.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+
+
+def neighbours(data: list[list[str]], x: int, y: int) -> int:
+	acc = 0
+
+	for x1, y1 in [
+		(x - 1, y - 1),
+		(x - 1, y),
+		(x - 1, y + 1),
+		(x, y - 1),
+		(x, y + 1),
+		(x + 1, y - 1),
+		(x + 1, y),
+		(x + 1, y + 1),
+	]:
+		try:
+			if x1 >= 0 and y1 >= 0 and data[x1][y1] == "#":
+				acc += 1
+		except IndexError:
+			pass
+
+	return acc
+
+
+def simulate(data: list[list[str]]) -> list[list[str]]:
+	ndata = [["." for i in range(100)] for j in range(100)]
+
+	for i in range(100):
+		for j in range(100):
+			if data[i][j] == "#" and neighbours(data, i, j) in [2, 3]:
+				ndata[i][j] = "#"
+			elif data[i][j] == "." and neighbours(data, i, j) == 3:
+				ndata[i][j] = "#"
+
+	return ndata
+
+def main() -> None:
+	with open("input", "r", encoding="utf-8") as f:
+		data = [list(l.strip()) for l in f.readlines()]
+
+	for i in range(100):
+		data = simulate(data)
+
+	print(sum(data[i].count("#") for i in range(100)))
+
+
+if __name__ == "__main__":
+	main()
diff --git a/2015/18/puzzle-2.py b/2015/18/puzzle-2.py
new file mode 100755
index 0000000..9a998b8
--- /dev/null
+++ b/2015/18/puzzle-2.py
@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+
+
+def neighbours(data: list[list[str]], x: int, y: int) -> int:
+	acc = 0
+
+	for x1, y1 in [
+		(x - 1, y - 1),
+		(x - 1, y),
+		(x - 1, y + 1),
+		(x, y - 1),
+		(x, y + 1),
+		(x + 1, y - 1),
+		(x + 1, y),
+		(x + 1, y + 1),
+	]:
+		try:
+			if x1 >= 0 and y1 >= 0 and data[x1][y1] == "#":
+				acc += 1
+		except IndexError:
+			pass
+
+	return acc
+
+
+def simulate(data: list[list[str]]) -> list[list[str]]:
+	ndata = [["." for i in range(100)] for j in range(100)]
+
+	for i in range(100):
+		for j in range(100):
+			if (i, j) in [(0, 0), (0, 99), (99, 0), (99, 99)]:
+				ndata[i][j] = "#"
+			elif data[i][j] == "#" and neighbours(data, i, j) in [2, 3]:
+				ndata[i][j] = "#"
+			elif data[i][j] == "." and neighbours(data, i, j) == 3:
+				ndata[i][j] = "#"
+
+	return ndata
+
+def main() -> None:
+	with open("input", "r", encoding="utf-8") as f:
+		data = [list(l.strip()) for l in f.readlines()]
+	data[0][0], data[0][99], data[99][0], data[99][99] = "#", "#", "#", "#"
+
+	for i in range(100):
+		data = simulate(data)
+
+	print(sum(data[i].count("#") for i in range(100)))
+
+
+if __name__ == "__main__":
+	main()