<?php
$input = file('input', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
$input = array_map('str_split', $input);
$newInput = [];
for ($i = 0; $i < 5; $i++) {
    for ($j = 0; $j < 5; $j++) {
        foreach ($input as $row => $line) {
            foreach ($line as $column => $number) {
//                echo ($row + 1) * $i . '-' . ($column + 1) * $j . ' ';
                $newNumber = ($number + $i + $j);
                if ($newNumber > 9) {
                    $newNumber++;
                }

                $newInput[count($input) * $i + $row][count($input[0]) * $j + $column] = $newNumber%10;
            }

        }
//        echo "\n";
    }
}
$input = $newInput;
//foreach ($newInput as $line) {
//    foreach ($line as $number) {
//        echo $number . '';
//    }
////    die();
//    echo "\n";
//}
//die();

$visited = array_fill(0, count($input), array_fill(0, count($input[0]), PHP_INT_MAX));

$queue = [[0, 0]];
$visited[0][0] = 0;

while (count($queue) > 0) {
    [$x, $y] = array_shift($queue);
    //down
    if (isset($input[$x + 1][$y]) &&
        $visited[$x + 1][$y] > $visited[$x][$y] + $input[$x + 1][$y]
    ) {
        $queue[] = [$x + 1, $y];
        $visited[$x + 1][$y] = $visited[$x][$y] + $input[$x + 1][$y];
    }
    //right
    if (isset($input[$x][$y + 1]) &&
        $visited[$x][$y + 1] > $visited[$x][$y] + $input[$x][$y + 1]
    ) {
        $queue[] = [$x, $y + 1];
        $visited[$x][$y + 1] = $visited[$x][$y] + $input[$x][$y + 1];
    }
}

echo $visited[count($visited) - 1][count($visited[0]) - 1]; //553