import java.util.Scanner;

public class No00000032_Main2 {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int l = scan.nextInt();
		int m = scan.nextInt();
		int n = scan.nextInt();

		int nn = n / 25;
		int mm = 25 * (m + nn);

		System.out.println((((100 * (l + mm / 100)) % 1000) / 100) + ((mm % 100) / 25) + (n % 25));

		scan.close();

	}

}