/* 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
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner s=new Scanner(System.in);
		int a[]={8,-7,2,7,0};
		int n=a.length;
		int sum=0;
		int m=solve1(a,n-1,sum);
		System.out.println(m);
 
	}
	public static int solve1(int a[],int n,int sum){
		if(n==0){
			sum+=a[n];
			return sum;
		}
		sum=sum+a[n];
		return solve1(a,n-1,sum);
 
	} 
 
}

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