[백준]1427-소트인사이드(설명X)

//#define _CRT_SECURE_NO_WARNINGS
#include <cstdio>
 
int main() {
    int input;
    scanf("%d", &input);
    int ary[10]{ 0, };
    while (input > 0) {
        ary[input % 10]++;
        input /= 10;
    }
    for (int i = 9; i >= 0; i--)
        for (int j = 0; j < ary[i]; j++)
            printf("%d", i);
    printf("\n");
}