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#!/usr/bin/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" }
{
# START PART 1
x = $1 * $2
y = $2 * $3
z = $1 * $3
sum += (2 * x) + (2 * y) + (2 * z) + min(x, y, z)
# END PART 1 START PART 2
x = $1 + $1 + $2 + $2
y = $2 + $2 + $3 + $3
z = $1 + $1 + $3 + $3
sum += $1 * $2 * $3 + min(x, y, z)
# END PART 2
}
END { print sum }
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