Osobistosc

#include <iostream>

using namespace std;

int main()
{
    short int ile;
    cin >> ile;
    for(short int i = 0; i < ile; i++){
        short int n;
        cin >> n;
        short int tablica[n][n];
        for(short int k = 0; k < n; k++){
            for(short int j = 0; j < n; j++){
                cin >> tablica[j][k];
            }
        }

        short int kolumna = 0;
        short int wiersz = 0;
        while(kolumna < n){
            if(tablica[wiersz][kolumna] == 1){
                kolumna++;
            } else {
                wiersz++;
            }
        }
        cout << wiersz + 1 << endl;



    }



    return 0;
}