题解 | #质数因子#

innu = input()
if(int(innu)%10 == 0 ):
    print(innu)
else:
#     dic = {}
    arr = []
    out_number = ""
    in_number = int(innu)
    for i in range(len(str(innu))):
        value =in_number%10
        if(value not in arr):
            out_number += str(int(value))
            arr.append(value)
        in_number = ((in_number-value)/10)
    print(out_number)
#各种变量的数据类型换的好苦