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[AtCoder]ABC-282|B - Let's Get a Perfect Score
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提出結果
def getIntMap():
return map(int, input().split())
def getStringListRow(N):
return [list(input()) for _ in range(N)]
def chk(a1, a2):
r = True
for i in range(len(a1)):
if a1[i] == 'x' and a2[i] == 'x':
r = False
break
return r
def main():
n, m = getIntMap()
s = getStringListRow(n)
c = 0
for i in range(n):
for j in range(i+1, n):
if chk(s[i], s[j]):
c += 1
print(c)
if __name__ == "__main__":
main()
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