题解 | #删除字符串中出现次数最少的字符#

from collections import Counter

while True:
    try:
        i = input()
        d = dict(Counter(i))
        dd = min(d.values())
        l = [k for k,v in d.items() if v == dd]
        print(''.join([j for j in i if j not in l]))
    except:
        break