8

package task8;

import java.util.Scanner;
class Average {
    double a,b,c;
   public Average(double a,double b,double c){
this.a=a;
this.b=b;
this.c=c;
  }
   public double Calculate(){
    System.out.println((a+b+c/3));
    return 1;
  }
}
public class Task8 {



    public static void main(String[] args) {
       Scanner avg = new Scanner(System.in);
       double a,b,c;
       a = avg.nextDouble();
       b = avg.nextDouble();
       c = avg.nextDouble();
       Average avg1 = new Average(a,b,c);
       avg1.Calculate();
    }

}