#include <iostream>
#include <algorithm>
#include <cstring>
#include <cmath>
using namespace std;
int n = 200;

int main()
{
	int x, y, rez;
	x = 0;
	y = n - 1;
	while(1)
	{
		cout << x << ' ' << y << "\n";
		cout.flush();
		cin >> rez;
		if(rez == 0)
			break;
		if(rez < 0)
			x++;
		else
			y--;
	}
	return 0;
}