T = int(input())
dr = [(-1,-1),(-1,0),(-1,1),(0,-1),(0,1),(1,-1),(1,0),(1,-1)]

for _ in range(T):
    H, W = map(int, input().split())
    A = [list(map(int, input().split())) for _ in range(H)]
    ans = "finite"
    for ci in range(H):
        for cj in range(W):
            for di, dj in dr:
                ni = ci + di
                nj = cj + dj
                if 0 <= ni < H and 0 <= nj < W:
                    t = A[ci][cj] + A[ni][nj]
                    if t > 0:
                        ans = "infinite"
                        break

    print(ans)