def main():
    h, w = list(map(lambda x: int(x), input().split()))
    A = [list(map(int, input().split())) for _ in range(h)]
    N = min(h, w)
    for y0 in range(h):
        for x0 in range(w):
            for y1 in range(h):
                if y0 != y1 and 0 < A[y0][x0] + A[y1][x0]:
                    return 1
            for x1 in range(w):
                if x0 != x1 and 0 < A[y0][x0] + A[y0][x1]:
                    return 1
            for d in range(-2*N, 2*N):
                y1, x1 = y0+d, x0+d
                if 0 <= y1 < h and 0 <= x1 < w and 0 < A[y0][x0] + A[y1][x1]:
                    return 1
                y1, x1 = y0+d, x0-d
                if 0 <= y1 < h and 0 <= x1 < w and 0 < A[y0][x0] + A[y1][x1]:
                    return 1
    return 0

for _ in range(int(input())):
    print("infinite" if main() else "finite")