#include <bits/stdc++.h>
using namespace std;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int T; cin >> T;
    while(T--){
        int H,W; cin >> H >> W;
        vector<vector<int>> A(H,vector<int>(W));
        for(auto &h :  A) for(auto &w : h) cin >> w;

        int n = H*W;
        bool yes = false;
        for(int i=0; i<H; i++) for(int k=0; k<W; k++){
            for(int dx=-1; dx<=1;dx++) for(int dy=-1; dy<=1; dy++){
                if(dx == 0 && dy == 0) continue;
                int x = i+dx,y = k+dy;
                while(x >= 0 && x < H && y >= 0 && y < W){
                    int now = A.at(i).at(k)+A.at(x).at(y);
                    if(now > 0) yes = true; 
                    x += dx,y += dy;
                }
            }
        }
        if(yes) cout << "infinite\n";
        else cout << "finite\n";
    }
}