<?php
echo intval(137/10)*10 . "\n";
//https://pt.stackoverflow.com/q/129743/101
PD9waHAKZWNobyBpbnR2YWwoMTMvMTApKjEwIC4gIlxuIjsKZWNobyBpbnR2YWwoMjUvMTApKjEwIC4gIlxuIjsKZWNobyBpbnR2YWwoMTM3LzEwKSoxMCAuICJcbiI7CgovL2h0dHBzOi8vcHQuc3RhY2tvdmVyZmxvdy5jb20vcS8xMjk3NDMvMTAx