#include<stdio.h>
int main(){
    int n;
    scanf("%d", &n);
    if(n < 0) {
        printf("invalid input");
        return 0;
        }
        int arr[20];
        for (int i = 0;i,n;i++){
            scanf("%d",&arr[i]);
            }
            int result[20];
            int index = 0;
            for(int i=0;i<n;i++) {
                if(arr[i]!=0){
                    result[index++] = arr[i];
                    }
                    }
                    while (index < n){
                        result[index++] = 0;
                        }
                        for (int i=0;i<n;i++){
                            printf("%d",result[i]);
                            if(i < n- 1) printf(" ");
                            }
                            return 0;"
}