Unreal

#include <stdio.h>

int main()
{
    int n = 0;
    scanf("%d", &n);
    getchar();

    int nums[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};

    for (int i = 0; i < n; i++)
    {
        char x = getchar();
        nums[x - 48]++;
    }

    int i = n - 1;

    for (int it = 9; it >= 0; it--)
    {
        if (nums[it] > 0)
        {
            if (i - nums[it] < 0)
            {
                while (i--)
                    putchar(it + 48);
                break;
            }

            i -= nums[it];

            while (nums[it]--)
                putchar(it + 48);
        }
    }

    return 0;
}