#include<iostream>
using namespace std;
int main(){
while(true){
int m,n,sum=0;
cin >> m >> n;
if(m*n == 0 || m < 0 || n < 0){
break;
}
if(m > n) swap(m,n);
for(int i = m;i<=n;i++){
cout<<i<<" ";
sum = sum + i;
}
cout<<"Sum="<<sum<<endl;
}
return 0;
}