#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main() {
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);
    int t;
    cin >> t;
    while (t--) {
        int h, w;
        cin >> h >> w;
        vector<vector<int>> a(h, vector<int>(w));
        rep(i, h) rep(j, w) cin >> a[i][j];
        bool ok = true;
        rep(i, h) rep(j, w)
            rep(x, h) rep(y, w) {
            if (i == x && j == y)
                continue;
            if (i == x || j == y || abs(i - x) == abs(j - y)) {
                if (a[i][j] + a[x][y] > 0)
                    ok = false;
            }
        }
        cout << (ok ? "finite" : "infinite") << endl;
    }
    return 0;
}