<?php

$number = intval(trim(fgets(STDIN)));
$operations = explode(", ", trim(fgets(STDIN)));
$results = [];

foreach ($operations as $operation) {
    switch ($operation) {
        case 'chop':
            $number = $number / 2;
            array_push($results, $number);
            break;
        case 'dice':
            $number = sqrt($number);
            array_push($results, $number);
            break;
        case 'spice':
            $number = $number + 1;
            array_push($results, $number);
            break;
        case 'bake':
            $number = $number * 3;
            array_push($results, $number);
            break;
        case 'fillet':
            $number = $number - $number * 0.2;
            array_push($results, $number);
            break;
        default:
            break;
    }
}

foreach ($results as $result) {
    echo $result . "\n";
}