#include <bits/stdc++.h>

using namespace std;

int main(void)
{
	cin.tie(0);
	ios::sync_with_stdio(false);

	int a,b;
	
	cout << 0 << " " << 0 << endl;
	cin >> a;
	if(a==0) return 0;
	cout << a << " " << 0 << endl;
	cin >> b;
	if(b==0) return 0;
	cout << (a-b)/2 << " " << b/2 << endl;
	int c;
	cin >> c;
	if(c==0) return 0;
	return 0;
}