#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)

map<pair<int, int>, int> memo;

int ask(int x, int y) {
  if (memo.count({x, y}))
    return memo[{x, y}];
  cout << x << " " << y << endl;
  cout.flush();
  int d;
  cin >> d;
  if (d == 0)
    exit(0);
  return memo[{x, y}] = d;
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int lx = -1, ux = 100000;
  int ly = -1, uy = 100000;

  while (ux - lx > 1) {
    if (ask(lx, uy) == ask(ux, uy)) {
      ux = (lx + ux) / 2;
      break;
    } else if (ask(lx, uy) < ask(ux, uy)) {
      ux = (lx + ux) / 2;
    } else {
      lx = (lx + ux) / 2;
    }
  }

  while (uy - ly > 1) {
    if (ask(ux, ly) == ask(ux, uy)) {
      uy = (ly + uy) / 2;
      break;
    } else if (ask(ux, ly) < ask(ux, uy)) {
      uy = (ly + uy) / 2;
    } else {
      ly = (ly + uy) / 2;
    }
  }
  ask(ux, uy);
  
  return 0;
}