1005.java

import java.io.IOException;
import java.util.Scanner;

public class Main {
 
    public static void main(String[] args) throws IOException {
 
        double A, B, media;
        Scanner sc = new Scanner(System.in);
        
        A = sc.nextDouble();
        B = sc.nextDouble();
        media = (3.5*A + 7.5*B)/11;
        
        System.out.printf("MEDIA = %.5f\n", media);
    }
 
}