题解 | #删除字符串中出现次数最少的字符#

import sys
in_str = map(lambda x:x.strip('\n'), sys.stdin.readlines())
for i in in_str:
    seti = list(set(i))
    listi = list(i)
    dic = []
    for j in range(len(seti)):
        dic.append([seti[j], i.count(seti[j])])
    dic = sorted(dic, key = lambda x:x[1])
    mini_t = dic[0][1]
    for k in dic:
        if k[1] == mini_t:
            for l in range(mini_t):
                listi.remove(k[0])
        else:
            break
    print(''.join(listi))