Deletes the least frequently occurring character in the string

describe

Delete the least frequent character in the string , If there are multiple characters with the least number of occurrences , Then delete the characters that appear the least . Output the string after deleting these words , The other characters in the string remain in the same order .

Data range ： The length of the input string meets the requirements  1 \le n \le 20 \1≤n≤20  , Ensure that only lowercase letters appear in the input string

Input description ：

String contains only lowercase letters ,  Illegal input is not considered , The length of the input string is less than or equal to 20 Bytes .

Output description ：

Delete the string after the least frequent character in the string .

Example 1

Input ：aabcddd

Output ：aaddd

while True:
    try:
        s = input()
        m = s.lower()
        dic, res = {}, ''
        if 1 <= len(m) <= 20:
            for i in m:
                if i not in dic:
                    dic[i] = 1
                else:
                    dic[i] += 1
            Min = min(dic.values())
            for i in m:
                if dic[i] != Min:
                    res += i
            print(res)
            
    except:
        break