<?php

$q = explode(" ", trim(fgets(STDIN)));

$ptn = array();

$ptn[0] = array(-2, -1);
$ptn[1] = array(-2, 1);
$ptn[2] = array(-1, -2);
$ptn[3] = array(-1, 2);
$ptn[4] = array(1, -2);
$ptn[5] = array(1, 2);
$ptn[6] = array(2, -1);
$ptn[7] = array(2, 1);

if ($q[0]==0 && $q[1]==0){
	//動かず終了
	echo "YES" . PHP_EOL;
}else if ($q[0] <= 6 && $q[0] >= -6 &&
          $q[1] <= 6 && $q[1] >= -6){
    //6 >= N >= -6のとき
    
    $tmp1 = array();
    
	for ($p1=0; $p1<count($ptn); $p1++){
		$tmp1[0] = $ptn[$p1][0];
		$tmp1[1] = $ptn[$p1][1];
		
		if ($tmp1[0]==$q[0] &&
		    $tmp1[1]==$q[1]){
			echo "YES" . PHP_EOL;
			exit;
		}
		
    	$tmp2 = array();
		
	    for ($p2=0; $p2<count($ptn); $p2++){
	    	
	    	$tmp2[0] = $tmp1[0] + $ptn[$p2][0];
	    	$tmp2[1] = $tmp1[1] + $ptn[$p2][1];
	    	
		    if ($tmp2[0]==$q[0] &&
			    $tmp2[1]==$q[1]){
				echo "YES" . PHP_EOL;
				exit;
			}
			
			$tmp3 = array();
	    	
	    	for ($p3=0; $p3<count($ptn); $p3++){
	        	$tmp3[0] = $tmp2[0] + $ptn[$p3][0];
	    		$tmp3[1] = $tmp2[1] + $ptn[$p3][1];
	    	
			    if ($tmp3[0]==$q[0] &&
				    $tmp3[1]==$q[1]){
					echo "YES" . PHP_EOL;
					exit;
				}
	    	}
	    }
	}
	
	//3回やってダメ
	echo "NO" . PHP_EOL;
}else{
	//チェック前から外れ
	echo "NO" . PHP_EOL;
}