<?php
$lost_games=(int)readline();
$headsets=readline();
$mice=readline();
$keyboards=readline();
$displays=readline();

$price=0;
$screens=0;
$isDivisibleByTwo = False;
for ($i = 1; $i <= $lost_games; $i+=1)
{
    $isDivisibleByTwo = $i%2 == 0;
    if($isDivisibleByTwo){
        $price+=$headsets;
    }

    if($i%3 == 0){
        $price+=$mice;

        if($isDivisibleByTwo){
            $price+=$keyboards;
            $screens++;
            if($screens%2 == 0){
                $price+=$displays;
            }
        }
    }
}
printf("Rage expenses: %.2f lv.",$price);