#include <iostream>
using namespace std;

int main()
{
    int n=200;

    int z=-1;

    int ni=0;
    int nj=n-1;

    do{
        cout<<ni<<' '<<nj<<'\n';
        cout.flush();
        cin>>z;

        if(z>0) --nj;
        else ++ni;

    } while(z!=0);
}