题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
while True:
try:
pass
print(len(set([i for i in input()])))
except Exception as e:
break
try:
pass
print(len(set([i for i in input()])))
except Exception as e:
break
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