/*
TASK:mov
LANG:C++
*/
#include <iostream>
using namespace std;
int a, b;
bool ans;
int main()
{
    cin >> a;
    for (int i = 1; i <= a; i++)
    {
        //cout << a;
        ans = 0;
        for (int j = 1; j <= 10; j++)
        {
            cin >> b;
            ans ^= b;
        }
        cout << ans;
    }
    cout << endl;
    return 0;
}
