A + B - 5

#include <iostream>
using namespace std;

int main(void)
{
	int A=1, B=1;

	while (A != 0 && B != 0)
	{
		cin >> A;
		cin >> B;
		if (A == 0 && B == 0)
			return 0;
		cout << A + B << '\n';
	}
}