<?php
fscanf(STDIN,"%d%d%d%d",$N,$V,$ox,$oy);
--$ox; --$oy;
for($i=0;$i<$N;++$i) $m[] = array_map('intval',explode(" ", trim(fgets(STDIN))));
$memo = array_fill(0,$N,array_fill(0,$N,-1));

run(0,0,$V,1);

if($memo[$N-1][$N-1] > 0) echo "YES" . PHP_EOL;
else echo "NO" . PHP_EOL;

function run($y,$x,$now,$oasis){
    global $m,$N,$ox,$oy,$memo;
    if($y==$oy && $x==$ox && $oasis>0){
        $now *= 2;
        $oasis = 0;
    }
    if($now<=0 || $now <= $memo[$y][$x]) return;
    $memo[$y][$x] = $now;

    if($y > 0) run($y-1,$x,$now-$m[$y-1][$x],$oasis);
    if($y < $N-1) run($y+1,$x,$now-$m[$y+1][$x],$oasis);
    if($x > 0) run($y,$x-1,$now-$m[$y][$x-1],$oasis);
    if($x < $N-1) run($y,$x+1,$now-$m[$y][$x+1],$oasis);
}


?>