while True:
a,b = map(int,input().split())
if a == b == 0:
break
cnt = 0
L = list(map(int,input().split()))
for i in range(b):
L2 = list(map(int,input().split()))
for j in range(a):
if L[j] < L2[j]:
break
else:
cnt+=1
print(cnt)