#include <iostream>
using namespace std;

void func(int* p, int n);

int main() {

    int arr[6] = { 0 };
    for (int i = 0; i < 6; i++) {
        cin >> arr[i];
    }

    func(arr, 6);

    for (int i = 0; i < 6; i++) {
        if (i == 5) {
            cout << arr[i] << endl;
        } else {
            cout << arr[i] << " ";
        }
    }

    return 0;
}

void func(int* p, int n) {

    // write your code here......
    for (int i = 0; i < n; i++) {
        if (p[i] == 0) {
            int j = 0;
            for (j = i; j < n; j++) {
                if (j != n - 1)
                    p[j] = p[j + 1];
                else
                    p[j] = 0;
            }
        }
    }

}