题解 | 字符个数统计
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
import collections import sys s_in = input() d = collections.defaultdict(int) for x in s_in: if x >="!" and x <= "~": d[x] += 1 print(len(d.items()))
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
import collections import sys s_in = input() d = collections.defaultdict(int) for x in s_in: if x >="!" and x <= "~": d[x] += 1 print(len(d.items()))
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