WUPC2012

1番 http://wupc2012.contest.atcoder.jp/tasks/wupc2012_1

<?php
 
fscanf(STDIN,"%d %d",$ma,$da);
fscanf(STDIN,"%d %d",$mb,$db);
 
$data1 = "2012/{$ma}/{$da}";
$data2 = "2012/{$mb}/{$db}";
 
$daydiff = (strtotime($data2)-strtotime($data1))/(3600*24);
 
echo "$daydiff\n";
 
?>