mirror of
https://github.com/tiennm99/codeforces.git
synced 2026-06-09 20:13:14 +00:00
8 lines
141 B
PHP
8 lines
141 B
PHP
<?php
|
|
fscanf(STDIN, "%d %d %d", $n, $m, $a);
|
|
|
|
$tilesN = intdiv($n + $a - 1, $a);
|
|
$tilesM = intdiv($m + $a - 1, $a);
|
|
|
|
echo $tilesN * $tilesM;
|