<?php
mb_internal_encoding("UTF-8");
$apples = array(
    200,
    200,
    100
    
    
    
);
function doApple($n, $array)
{
    
    $summary      = array_sum($array);
    $half         = $summary / 2;
    $half2        = $half;
    $apples2      = array();
    $apples2      = array_count_values($array);
    $summary_mass = 0;
    foreach ($apples2 as $mass => &$count) {
        if ($count != 0) {
            
            $arg = floor($half / $mass);
            $arg = min ($arg, $count);
            $half -= $arg * $mass;
            $count -= $arg;
            $summary_mass += $arg * $mass;
            
        }
        
        
    }
    if ($summary_mass == $half2) {
        return "Yes\n";
    } else {
        return "No\n";
    }
    
    
}
echo doApple(3, $apples);