include[HTML_REMOVED]

include[HTML_REMOVED]

using namespace std;

int main(){
int x,y;

while(cin>>x>>y,x>0&&y>0){
    if(x>y) swap(x,y);
    for(int i=x;i<=y;i++)
        cout<<i<<" ";
    cout<<"Sum="<<(x+y)*(y-x+1)/2<<endl;    
}

return 0;

}