26 lines
565 B
Python
Executable file
26 lines
565 B
Python
Executable file
#!/usr/bin/env python
|
|
|
|
import sys
|
|
from collections import defaultdict
|
|
from typing import DefaultDict, List, Set
|
|
|
|
|
|
def solve(raw: List[str]) -> int:
|
|
answers: DefaultDict[int, Set[str]] = defaultdict(set)
|
|
group = 0
|
|
for line in raw:
|
|
if line == "":
|
|
group += 1
|
|
continue
|
|
answers[group] |= {char for char in line}
|
|
return sum(len(answer) for answer in answers.values())
|
|
|
|
|
|
def main() -> None:
|
|
input = [line.strip() for line in sys.stdin.readlines()]
|
|
print(solve(input))
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|