($N,$M)=glob<>;
for(<>){
	$i=0;
	$_[$i++]+=$_ for glob;
	$s=$l=$r=0;
	while($r<=$N){
		if($s==777){
			exit!print'YES'
		}elsif($s<777){
			$s+=$_[$r++]
		}else{
			$s-=$_[$l++]
		}
	}
}
print'NO'