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#!/usr/bin/env python3
def main() -> None:
with open("input", "r", encoding="utf-8") as f:
print(
sum(
map(
lambda p: len(p) == len(set(p)),
# START PART 1
map (
lambda l: l.split(), f.readlines()
),
# END PART 1 START PART 2
map(
lambda l: list(map(lambda w: "".join(sorted(w)), l.split())), f.readlines()
),
# END PART 2
)
)
)
if __name__ == "__main__":
main()
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