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Hot and Cold

  • subhanis
     + 0 comments
    <?php

$handle = fopen ("php://stdin", "r");
function isSatisfiable($c1, $c2, $h1, $h2){
    // Complete this function
    $cmin = min($c1, $c2);
    $cmax = max($c1, $c2);
    $hmin = min($h1, $h2);
    $hmax = max($h1, $h2);
    if($cmin<=$hmin && $cmin<=$hmax && $cmax<=$hmin && $cmax<=$hmax){
        if(($hmin-$cmin) >= 0)
            return 'YES';
        else
            return 'NO';
    }
    else
        return 'NO';
}

// Return "YES" if all four conditions can be satisfied, and "NO" otherwise
fscanf($handle, "%d %d %d %d", $c1, $c2, $h1, $h2);
$result = isSatisfiable($c1, $c2, $h1, $h2);
echo $result . "\n";

?>