m=lambda:map(int,input().split())
for _ in[0]*int(input()):
 H,W=m();A=[[*m()]for _ in[0]*H];f=0
 for _ in[0]*2:
  for i in A:
   n=sorted(i);f|=n[-1]+n[-2]>0
  for i in range(1,H+W-2):
   n=sorted([A[j][i-j]for j in range(max(0,i-W+1),min(i,H-1)+1)]);f|=n[-1]+n[-2]>0
  H,W=W,H;A=[*zip(*A[::-1])]
 a="in"*f+"finite"
 print(a)