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

int main(){
  int minx=0,maxx=100000;
  cout<<minx<<" "<<0<<"\n";
  int d1;cin>>d1;
  if(d1==0)return 0;
  cout<<maxx<<" "<<0<<"\n";
  int d2;cin>>d2;
  if(d2==0)return 0;
  int leftdis=0,rightdis=0;
  if(d1>=d2){
    minx=(minx+maxx)/2;
    leftdis=0;
    rightdis=d2;
  }else{
    maxx=(minx+maxx)/2;
    leftdis=d1;
    rightdis=0;
  }
  int resx;
  while(maxx-minx>5){
    int mid=(minx+maxx)/2;
    cout<<mid<<" "<<0<<"\n";
    int d;cin>>d;
    if(d==0)return 0;
    if(leftdis==0){
      leftdis=d;
      if(leftdis>rightdis){
        leftdis=0;
        minx=mid;
      }else if(leftdis<rightdis){
        rightdis=0;
        maxx=mid;
      }else{
        resx=(maxx+minx)/2;
        break;
      }
    }else{
      rightdis=d;
      if(leftdis>rightdis){
        leftdis=0;
        minx=mid;
      }else if(leftdis<rightdis){
        rightdis=0;
        maxx=mid;
      }else{
        resx=(maxx+minx)/2;
        break;
      }
    }
  }
  resx=minx;
  int nowdis=999999999;
  for(int i=minx;i<=maxx;i++){
    cout<<i<<" "<<0<<"\n";
    int dd;cin>>dd;
    if(dd==0)return 0;
    if(dd<nowdis){
      nowdis=dd;
      resx=i;
    }
  }
  int miny=0,maxy=100000;
  cout<<resx<<" "<<miny<<"\n";
  d1;cin>>d1;
  if(d1==0)return 0;
  cout<<resx<<" "<<maxy<<"\n";
  d2;cin>>d2;
  if(d2==0)return 0;
  leftdis=0,rightdis=0;
  if(d1>=d2){
    miny=(miny+maxy)/2;
    leftdis=0;
    rightdis=d2;
  }else{
    maxy=(miny+maxy)/2;
    leftdis=d1;
    rightdis=0;
  }
  int resy;
  while(maxy-miny>5){
    int mid=(miny+maxy)/2;
    cout<<resx<<" "<<mid<<"\n";
    int d;cin>>d;
    if(d==0)return 0;
    if(leftdis==0){
      leftdis=d;
      if(leftdis>rightdis){
        leftdis=0;
        miny=mid;
      }else if(leftdis<rightdis){
        rightdis=0;
        maxy=mid;
      }else{
        resy=(maxy+miny)/2;
        cout<<resx<<" "<<resy<<"\n";
        int dd;cin>>dd;
        if(dd==0)return 0;
        break;
      }
    }else{
      rightdis=d;
      if(leftdis>rightdis){
        leftdis=0;
        miny=mid;
      }else{
        rightdis=0;
        maxy=mid;
      }
    }
  }
  resy=miny;
  nowdis=999999999;
  for(int i=miny;i<=maxy;i++){
    cout<<resx<<" "<<i<<"\n";
    int dd;cin>>dd;
    if(dd==0)return 0;
    if(dd<nowdis){
      nowdis=dd;
      resy=i;
    }
  }
  return 0;
}