56 lines
1.5 KiB
PHP
56 lines
1.5 KiB
PHP
<?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
|