sum of sub1

#include<iostream>
#include<fstream>
 int m,sum=0;
using namespace std;
class sumofsubset{
public:
    int w[50],x[10],n;
    void input()
    {
        freopen("input.txt","r",stdin);
    cin>>n;
    for(int i=1;i<=n;i++)
        {
             cin>>w[i];
             sum+=w[i];
        }

        cout<<"Value of w[i] array are:\n";
        for(int i=1;i<=n;i++)
        cout<<w[i]<<" ";
    }

    void sumofsub(int s,int k,int r)
    {
        x[k]=1;
        if(s+w[k]==m)
        {
            for(int i=1;i<=k;i++)
                cout<<x[i]<<" ";
                cout<<"\n\n";
        }
        else if(s+w[k]+w[k+1]<=m)
        {
            //cout<<"\nelse if k="<<k<<endl;
            sumofsub(s+w[k],k+1,r-w[k]);
            //cout<<"\nk A="<<k<<endl;
        }

        if((s+r-w[k]>=m)&&(s+w[k+1]<=m))
        {
            //cout<<"\nif k="<<k<<endl;
            x[k]=0;
            sumofsub(s,k+1,r-w[k]);
        }

    }
};

int main()
{
    sumofsubset ob1;
    ob1.input();
    cin>>m;
    cout<<"\nm="<<m<<"\n\n";

    ob1.sumofsub(0,1,sum);
}