import java.util.Scanner;

public class No_32 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int _100coins = sc.nextInt();
		int _25coins = sc.nextInt();
		int _1coins = sc.nextInt();

		_25coins += (_1coins / 25);
		_1coins %= 25;

		_100coins += (_25coins / 4);
		_25coins %= 4;

		_100coins %= 10;

		int sumCoins = _1coins + _25coins + _100coins;
		System.out.println(sumCoins);
		sc.close();

	}

}