#include using namespace std; typedef long long ll; typedef vector vi; typedef vector vl; typedef pair pii; typedef pair pll; typedef int _loop_int; #define REP(i,n) for(_loop_int i=0;i<(_loop_int)(n);++i) #define FOR(i,a,b) for(_loop_int i=(_loop_int)(a);i<(_loop_int)(b);++i) #define FORR(i,a,b) for(_loop_int i=(_loop_int)(b)-1;i>=(_loop_int)(a);--i) #define DEBUG(x) cout<<#x<<": "< P; int n,m; int a[1252][1252]; int main(){ scanf("%d%d",&n,&m); REP(i,m)REP(j,n)scanf("%d",&a[i][j]); FOR(i,1,m)REP(j,n)a[i][j] += a[i-1][j]; REP(i,m){ FORR(j,0,n)a[i][j+1] = a[i][j]; a[i][0] = 0; REP(j,n+1)a[i][j+1] += a[i][j]; // REP(j,n+1)printf("%d ",a[i][j]);puts(""); REP(j,n+1){ int rig = a[i][j]; // rig - lft = 777 int lft = *lower_bound(a[i], a[i]+j, rig-777); if(rig-lft == 777){ puts("YES"); return 0; } } } puts("NO"); return 0; }