#include <cstdlib>
#include <iostream>

using namespace std;

int main()
{
 int n,m;

 while(1)
 {
   cin>>n>>m;
 if(n<=0||m<=0)
 break;
 if(m>n)
 {
        int s=0;
        for(int i=n;i<=m;i++)
        {
                cout<<i<<" ";
                s=s+i;
        }
        cout<<"sum ="<<s;
        cout<<endl;
 }
 if(n>m)
 {
        int k=0;
        for(int j=m;j<=n;j++)
        {
                cout<<j<<" ";
                k=k+j;
        }
     cout<<"sum ="<<k;
     cout<<endl;
}
}




    return 0;
}