#include<bits/stdc++.h>
using lint=long long;
lint query(lint x, lint y){
    std::cout<<x<<" "<<y<<std::endl;
    lint ans;
    std::cin>>ans;
    if(!ans)exit(0);
    return ans;
}
int main(){
    std::cin.tie(nullptr);std::ios_base::sync_with_stdio(false);
    std::cout.setf(std::ios_base::fixed);std::cout.precision(15);
    lint max=100000;
    std::vector<lint>ans(2);
    for(lint i=0;i<2;i++){
        auto cal=[&](lint x){
            std::vector<int>a(2);
            a.at(i)=x;
            return query(a.at(0),a.at(1));
        };
        lint l=0,r=max+1;
        while(1<r-l){
            lint c=(l+r)/2;
            (cal(c-1)>cal(c)?l:r)=c;
        }
        ans.at(i)=l;
    }
    std::cout<<ans.at(0)<<" "<<ans.at(1)<<'\n';
}