integer::N,M,i,j,k,d=0
integer,allocatable,dimension(:,:)::a
integer,allocatable,dimension(:)::b,c

read *,N,M
allocate(a(M,N),b(N),c(N))
do i=1,M
 read *,a(i,:)
end do
b(0:N)=0
c(0:N)=0


do i=1,M
 do j=1,N
  if(j==1) then
   do k=1,N
    b(k)=b(k)+a(i,k)
    c(k)=c(k-1)+b(k)
   end do
  end if
  do k=1,N-1
   if(c(j+k-1)-c(k-1)==777) then
    print *,'YES'
    stop
   end if
  end do
 end do
end do

 print *,'NO'

end