题解 | #删除字符串中出现次数最少的字符#

import sys
from collections import Counter
for line in sys.stdin:
    d=Counter(line.strip())
    l=list(line.strip())
    min_count=min(d.values())
    for i in range(len(l)):
        if d[l[i]]== min_count:
            l[i]=''
    print(''.join(l))