백준 #21300번 Bottle Return

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int d = sc.nextInt();
		int e = sc.nextInt();
		int f = sc.nextInt();
		
		System.out.println((a + b + c + d + e + f) * 5);
		sc.close();
	}
}