#include<stdio.h>
int main()
{
    int n;
    scanf("%d", &a);
    if (a < 0)
    {
        printf("Invalid Input");
        return 0;
    }
    int arr[N];
    for ( int i = 0; i < N; i++)
    {
        scanf("%d", &arr[i]);
    }
    int index = 0;
    for(int i = 0; i < N; i++)
    {
        if(arr[i] != 0)
        {
            arr[index++] = arr[i];
        }
    }
    while (index < N)
    {
        arr[index++] = 0;
    }
    for(int i = 0; i < N; i++){
        printf("%d ",arr[i]);
    }
    return 0;
}