#include <algorithm>
#include <functional>
#include <iostream>
#include <map>

using namespace std;

int main(int argc, const char* argv[])
{
	bool flag = false;
	auto f	= [&](uint32_t x, uint32_t y) {
		if (flag) return 0;
		cout << x << " " << y << endl;
		int d;
		cin >> d;
		if (d == 0) flag = true;
		return d;
	};
	uint32_t d0 = f(0, 0);
	uint32_t d1 = f(d0, 0);
	uint32_t x = d0 - d1 / 2, y = d1 / 2;
	uint32_t d2 = f(x, y);
	return 0;
}