题解 | #删除字符串中出现次数最少的字符#

while True:
    try:
        s=input().strip()
        #出现次数最少是
        l=len(s)
        for i in set(s):
            n=s.count(i)
            if n<l:
                l=n
        #结合非出现次数最少的字符
        ns=''
        for i in s:
            if s.count(i)!=l:
                ns+=i
        print(ns)
    except:
        break