#include <iostream>

using namespace std;

int main()
{
    int a, b;
    while (cin >> a >> b)
    {
        if (a <= 0 || b <= 0) break;

        if (a > b) swap(a, b);
        for (int i = a; i <= b; i++) cout << i << ' ';
        cout << "Sum=" << (a + b) * (b - a + 1) / 2 << endl;
    }

    return 0;
}