import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int money1000YenNum = 0;
        int money100YenNum = Integer.parseInt(scanner.next());
        int money25YenNum = Integer.parseInt(scanner.next());
        int money1YenNum = Integer.parseInt(scanner.next());

        money25YenNum += (money1YenNum / 25);
        money1YenNum -= ((money1YenNum / 25) * 25);

        money100YenNum += (money25YenNum / 4);
        money25YenNum -= ((money25YenNum / 4) * 4);

        money1000YenNum += (money100YenNum / 10);
        money100YenNum -= ((money100YenNum / 10) * 10);

        System.out.println((money1YenNum + money25YenNum + money100YenNum));
    }
}