Subset problem challenge

#1


when to print ’ No’ in this

#2 
int sum=0; 

    //base case

    if(i==n){

        if(sum==0){

            cout<<"Yes";

            return 0;

        }

every time inside function sum will be intialised with 0 and if i==n
then always sum=0 hence always print “Yes”
your approach is not correct

Correct Approach

#3

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