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[AtCoder]ABC-063|B - Varied
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提出結果
def getString():
return input()
def main():
s = list(getString())
t = list(set(s))
print('yes' if len(s) == len(t) else 'no')
if __name__ == "__main__":
main()
def getString():
return input()
def main():
s = list(getString())
t = list(set(s))
print('yes' if len(s) == len(t) else 'no')
if __name__ == "__main__":
main()
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