#include<stdio.h>
     int recursion(int* array,int i,int j,int size){
     	int sum = 0;
            if(i < size-1){
                   if(j < size ){
                        printf("+(%d+%d)",array[i], array[j]);
                        sum = sum+array[i]+array[j];
                        j++;
                        sum = sum + recursion(array,i,j,size);
                   }
                   else{
                         i++;
                         j=i+1;
                         sum = sum + recursion(array,i,j,size);
                   }
            }       
            return sum;
     }
 
    int main(){
       int i=0,j=i+1,sum=0;
       int a[3]={2,4,6};
 
       int c =recursion(a,i,j,3);
       printf("=%d",c);
       return 0;
    }

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