#include<iostream>
using namespace std;
int main()
{
    int x=0,y=199,v;
    while(true)
    {
        cout<<x<<" "<<y<<endl;
        cin>>v;
        if(v<0)
            x++;
        else
            if(v>0)
            y--;
        else
            break;
    }
    return 0;
}