#include <iostream>

using namespace std;

int main(void){
  int x=50000;
  int y=50000;
  int d1,d2,d3,d4;
  cout << x << y << endl;
  cin >> d1;
  if(d1==0) return 0;
  x = x+d1;
  cout << x << y << endl;
  cin >> d2;
  if(d2==0) return 0;
  if(d2<(2*d1)){
    x = x-(d2/2);
    y = y+(d2/2);
    cout << x << y << endl;
    cin >> d3;
    if(d3==0) return 0;
    if(d3<d2){
      x = x+(d3/2);
      y = y-(d3/2);
      cout << x << y << endl;
      cin >> d4;
      if(d4==0) return 0;
    }
    else{
      y = y-d2;
      cout << x << y << endl;
      cin >> d4;
      if(d4==0) return 0;
    }
  }
  else{
    x = 50000-d1;
    y = 50000;
    cout << x << y << endl;
    cin >> d2;
    if(d2==0) return 0;
    x = x+(d2/2);
    y = y+(d2/2);
    cout << x << y << endl;
    cin >> d3;
    if(d3==0) return 0;
    x = x-(d3/2);
    y = y-(d3/2);
    cout << x << y << endl;
    cin >> d4;
    if(d4==0) return 0;
    y = y-d2;
    cout << x << y << endl;
    cin >> d4;
    if(d4==0) return 0;
  }
}