#include <stdio.h>

int main(int argc, char *argv[]) {
    int i, j, n, a[1000], count = 0;
    scanf_s("%d", &n);
    for (i = 0; i < n; i++)
    {
        scanf_s("%d", &a[i]);
    }
    for (i = 0; i < n; i++)
    {
        if (a[i] == 0)
        {
            count++;
            for (j = i; j < n-1; j++)
                a[j] = a[j + 1];
            i--;
            j--;
        }
    }
    for (i = n; i >= n - count; i--) {
        a[i] = 0;
    }
    for (j = 0; j < n-count; j++)
        printf("%d, ", a[j]);
    return 0;
}