Java 代码

/**4 MDKJ
[BC] is a techno tour de force. - Bill Gates
*/

import java.util.Scanner;

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

        double a = cin.nextDouble();
        double b = cin.nextDouble();
        double c = cin.nextDouble();

        System.out.println ("MEDIA = " + String.format("%.1f", (a * 2 + b * 3 + c * 5)/10));
    }
}