import java.util.Scanner;

public class No32 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int L = sc.nextInt();
		int M = sc.nextInt();
		int N = sc.nextInt();
		int sum = L * 100 + M * 25 + N;

		sum = sum % 1000;

		int coinCount = sum / 100;
		sum = sum % 100;

		coinCount = coinCount + sum / 25;
		sum = sum % 25;

		coinCount += sum;

		System.out.println(coinCount);
	}

}