题解 | #整数与IP地址间的转换#
字符个数统计
http://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
try:
strs = set(input())
print(len(strs))
except:
break
字符个数统计
http://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
try:
strs = set(input())
print(len(strs))
except:
break
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