<?php
$_fp = fopen("php://stdin", "r");
$arr =  [];
for ($i = 0; $i < 3; $i++) {
   $arr_temp = fgets($_fp);
   $arr[] = explode(" ",$arr_temp);
   array_walk($arr[$i],'intval');
}

$sums = [];
$count = [];
for ($i = 0; $i < 3; $i++) {
    $key = $arr[$i][0] . '_' . $arr[$i][1] . '_' . $arr[$i][2];
    $result = $arr[$i][0] + $arr[$i][1] + $arr[$i][2];
    $sums['row'][$key] = $result;
    $count[] = $result;
    
    $key = $arr[0][$i] . '_' . $arr[1][$i] . '_' . $arr[2][$i];
    $result = $arr[0][$i] + $arr[1][$i] + $arr[2][$i];
    $sums['col'][$key] = $result;
    $count[] = $result;
}

$temp = array_count_values($count);
$constant = array_search(max($temp), $temp);
$min = 100;

foreach ($sums['row'] as $k => $v) {
    if ($v != $constant) {
        $left = (int) $constant - (int) $v;
        
        $numbers = explode('_', $k);
        for ($i = 0; $i < 3; $i++) {
            $cost = ($numbers[$i] + $left) - $numbers[$i];
            if ($cost < $min) {
                $min = $cost;
            }
        }
    }
}

echo $min;
?>