#include <bits/stdc++.h>
using namespace std;

int ask( int x, int t ) {
  static map< int, int > memo[ 2 ];
  if( memo[ t ].count( x ) ) {
    return memo[ t ][ x ];
  }
  if( t == 0 ) {
    cout << x << " " << 0 << endl;
  } else {
    cout << 0 << " " << x << endl;
  }
  cin >> memo[ t ][ x ];
  if( memo[ t ][ x ] == 0 ) {
    exit( 0 );
  }
  return memo[ t ][ x ];
}

signed main() {
  ios::sync_with_stdio( 0 );
  int ans[ 2 ];
  for( int t = 0; t < 2; ++t ) {
    int lb = 0, ub = int( 1e5 );
    while( ub - lb > 5 ) {
      int f = lb + ( ub - lb ) / 3;
      int g = lb + ( ub - lb ) * 2 / 3;
      int a = ask( lb, t );
      int b = ask( f, t );
      int c = ask( g, t );
      int d = ask( ub, t );
      if( a <= b and b <= c and c <= d ) {
        ub = f;
      } else if( a >= b and b <= c and c <= d ) {
        ub = g;
      } else if( a >= b and b >= c and c <= d ) {
        lb = f;
      } else {
        lb = g;
      }
    }
    int mind = int( 1e5 );
    for( int i = lb; i <= ub; ++i ) {
      int d = ask( d, t );
      if( d < mind ) {
        mind = d;
        ans[ t ] = i;
      }
    }
  }
  cout << ans[ 0 ] << " " << ans[ 1 ] << endl;
  int d;
  cin >> d;
  assert( d == 0 );
  return 0;
}