import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        int amountBiscuits = Integer.parseInt(scanner.nextLine());
        int countWorkers = Integer.parseInt(scanner.nextLine());
        int biscuits30Days = Integer.parseInt(scanner.nextLine());
        double percents = 0.0;
        double productionOfMonth = 0.0;
        for (int i = 1; i <= 30; i++) {
            if (i % 3 == 0) {
                productionOfMonth += Math.floor(0.75 * amountBiscuits * countWorkers);
            } else {
                productionOfMonth += amountBiscuits * countWorkers;
            }
        }
        System.out.println(String.format("You have produced %.0f biscuits for the past month.", productionOfMonth));

        if (productionOfMonth >= biscuits30Days) {
            percents = ((productionOfMonth - biscuits30Days) / biscuits30Days) * 100;
            System.out.println(String.format("You produce %.2f percent more biscuits.", percents));
        } else {
            percents = ((biscuits30Days - productionOfMonth) / biscuits30Days) * 100;
            System.out.println(String.format("You produce %.2f percent less biscuits.", percents));
        }
    }
}