#include <iostream>
using namespace std;
#define n 200

bool ok;

bool check(int, int, int, int) ;
int altitude(int, int);

int main()
{
    int x1, x2, y1, y2;
    
    x1 = 0; y1 = 0;
    x2 = n - 1; y2 = n - 1;
    
    check(0, 0, n - 1, n - 1);
    return 0;
}

bool check(int x1, int y1, int x2, int y2)
{
    int alt;
    int midX = (x1 + x2) / 2;
    int midY = (y1 + y2) / 2;
    
    alt = altitude(midX, midY);
    
    if(alt == 0) return 1;
    
    if(alt > 0) return check(x1, y1, midX, midY);
    
    alt = altitude(x1, midY + 1);
    
    if(alt == 0) return 1;
    if(alt > 0) return check(midX + 1, y1, x2, midY);
    
    alt = altitude(midX + 1, y1);
    if(alt == 0) return 1;
    if(alt > 0) return check(x1, midY + 1, midX, y2);
    
    if(check(midX + 1, y1, x2, midY)) return 1;
    if(check(x1, midY + 1, midX, y2)) return 1;
    return check(midX + 1, midY + 1, x2, y2);
}

int altitude(int x, int y)
{
    int alt;
    cout << x << ' ' << y << '\n'; cout.flush();
    cin >> alt;
    return alt;
}