#include<bits/stdc++.h>
using namespace std;
inline string Ask(int x,int y)
{
    cout<<x<<" "<<y<<endl;
    string str;
    getline(cin,str);
    return str;
}
inline bool Found(string s)
{
    for(auto ch: s)
        if(ch=='!')
            return true;
    return false;
}
int main(){
    string NF=Ask(0,0);
    if(Found(NF))
        return 0;
    string same=Ask(0,0);
    string closer=Ask(1,1);
    if(Found(closer))
        return 0;
    if(same==closer)
    {
        string res=Ask(0,1);
        if(!Found(res))
        {
            res=Ask(1,0);
            assert(Found(res));
            return 0;
        }
        return 0;
    }
    int Lx=0,Rx=1e6;
    int Ly=0,Ry=1e6;
    while(Rx-Lx>=2||Ly-Ry>=2)
    {
        int Mx=(Lx+Rx)>>1;
        int My=(Ly+Ry)>>1;
        string fir=Ask(Mx,My);
        if(Found(fir))
            return 0;
        string sec=Ask(Mx+1,My);
        if(Found(sec))
            return 0;
        string thir=Ask(Mx+1,My+1);
        if(Found(thir))
            return 0;
        if(sec==closer)
            Lx=Mx+1;
        else
            Rx=Mx;
        if(thir==closer)
            Ly=My+1;
        else
            Ry=My;
    }
    string g=Ask(Lx,Ly),fl;
    if(Found(g))
        return 0;
    string h=Ask(Lx+1,Ly);
    if(Found(h))
        return 0;
    if(h==closer)
        fl=Ask(Lx+1,Ly+1);
    else
        fl=Ask(Lx,Ly+1);
    assert(Found(fl));
    
    return 0;
}