题解 | #删除字符串中出现次数最少的字符#

string=input()
strings={}
for i in string:
    if i in strings:
        strings[i]+=1
    else:
        strings[i]=1
code=min(strings.values())
for i in string:
    if strings[i]==code:
        string=string.replace(i,'')
print(string)