#include <bits/stdc++.h>
#define ll long long int
using namespace std;


void mainSolve()
{
    int n, k;
    cin >> n >> k;

    if (k == 0)
    {
        if (n % 4 == 0)
            cout << "off" << endl;
        else
            cout << "on" << endl;
    }
    else
    {
        if (n %4== 0)
            cout << "on" << endl;
        else
            cout << "ambiguous" << endl;
    }
}

int main()
{
    int t;
    cin >> t;
    while (t--)
    {
        mainSolve();
    }
    return 0;
}