#include <iostream>
using namespace std;

int main() {
    int n;
    cin >> n;

    int qian = n / 1000;
    int bai = n / 100 % 10;
    int shi = n / 10 % 10;
    int ge = n % 10;

    cout << qian << " " << bai << " " << shi << " " << ge << endl;

    return 0;
}