def w(a):
  for i in range(len(a)):
    for j in range(len(a)-i):
      if sum(a[i:1+i+j])==777:
        return 1
n,m=map(int,input().split())
a=[list(map(int,input().split())) for i in'.'*m]
v,b='NO',[0]*n
for i in a:
  b=[a+b for a,b in zip(b,i)]
  if w(b):
    v='YES'
    break
print(v)