package yukicoder;

import java.util.Scanner;

public class No_032 {
public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);
	int L = sc.nextInt();
	int M = sc.nextInt();
	int N = sc.nextInt();
	sc.close();
	int tmp = N / 25;
	N -= tmp * 25;
	M += tmp;
	tmp = 0;
	tmp = M / 4;
	M -= tmp * 4;
	L += tmp;
	tmp = 0;
	tmp = L / 10;
	L -= tmp * 10;
	System.out.println(L + M + N);
}
}