/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	private static int suma = 0;
	public static void main (String[] args) throws java.lang.Exception
	{
        int[] nums = { 3, 9, 7, 12, 20, 4, 11, 9, 21, 6, 8, 10 }; //{3, 9, 7, 12, 20, 4, 11, 9, 21, 6, 8, 10};
        System.out.println(average(nums, 0));
	}
 
   public static int average(int n[], int pos){
        //float resultado = (float)suma /(float)n.length;
        if(pos < n.length) {
            suma = suma + n[pos];
            average(n, pos + 1);
            //System.out.println(resultado);
        }
        //return resultado;
        //return (float)suma/ (float)n.length;
        return suma;
 
    }
 
}

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