G

#include <iostream>
#include <vector>

using namespace std;

int main() {
    int size;
    cin>>size;
    int matrix[size][size];

    for (int x = 0; x < size; x++)
        for (int y = 0; y < size; y++) {
            cin>>matrix[x][y];
        }

    for (int x = 0; x < size; x++) {
        for (int y = 0; y < size; y++) {
            if (matrix[x][y]) {
                cout<<x+1<<" "<<y+1<<endl;
            }
        }
    }
}