package yukicoder;

import java.util.Scanner;

public class N32 {
	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 k = 0;
		
		m += n / 25;
		n -= 25 * (n / 25);
		
		l += m / 4;
		m -= 4 * (m / 4);
		
		l -= 10 * (l / 10);
		
		System.out.println(l + m + n);
	}
}