T=int(input())
ans=[]
for _ in range(T):
    H,W=map(int,input().split())
    A=[list(map(int,input().split())) for i in range(H)]
    ok=False
    for i in range(H):
        for j in range(W):
            for ii in range(H):
                for jj in range(W):
                    if i==ii and j==jj:
                        continue
                    if (i==ii or j==jj or i-j==ii-jj or i+j==ii+jj) and A[i][j]+A[ii][jj]>0:
                        ok=True
                        break
    ans.append('infinite' if ok else 'finite')

import sys
sys.stdout.write('\n'.join(map(str,ans))+'\n')