import java.util.Arrays;
import java.util.Iterator;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);

		int L = in.nextInt();
		int M = in.nextInt();
		int N = in.nextInt();
		int K = 0;

		M += N / 25;
		N = N % 25;

		L += M / 4;
		M = M % 4;

		K += L / 10;
		L = L % 10;

		System.out.println(L+M+N);
	}
}