#include <bits/stdc++.h>
using namespace std;
#define rep(i, x, limit) for (long long i = (long long)x; i < (long long)limit; i++)
#define REP(i, x, limit) for (long long i = (long long)x; i <= (long long)limit; i++)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define el '\n'
#define spa " "
#define Yes cout << "Yes" << el
#define No cout << "No" << el
#define YES cout << "YES" << el
#define NO cout << "NO" << el
#define inp(x) for(auto &i:x)cin>>i
#define eps (1e-10)
#define Equals(a,b) (fabs((a) - (b)) < eps )
#define debug(x) cerr << #x << " = " << x << el
using ll = long long;
using ull = unsigned long long;
using i128 = __int128_t;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
using vi = vector<int>;
using vl = vector<ll>;
using vvl = vector<vector<ll>>;
using vs = vector<string>;
using vb = vector<bool>;
const double pi = 3.141592653589793238;
const int inf = 1073741823;
const ll infl = 1LL << 60;
const string ABC = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const string abc = "abcdefghijklmnopqrstuvwxyz";
const ll MOD = 998244353;
#include<atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using vm = vector<mint>;

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

  int t;
  cin >> t;

  while (t--) {
    int h, w;
    cin >> h >> w;

    vector<vl> A(h, vl(w));
    for (auto &row : A) {
      inp(row);
    }

    const int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1};
    const int dy[8] = {0, 0, -1, 1, -1, 1, -1, 1};

    bool infinite = false;

    rep(i, 0, h) {
      rep(j, 0, w) {
        rep(d, 0, 8) {
          int x = i + dx[d];
          int y = j + dy[d];

          while (0 <= x && x < h && 0 <= y && y < w) {
            if (A[i][j] + A[x][y] > 0) {
              infinite = true;
              break;
            }

            x += dx[d];
            y += dy[d];
          }

          if (infinite) break;
        }

        if (infinite) break;
      }

      if (infinite) break;
    }

    cout << (infinite ? "infinite" : "finite") << el;
  }
}