#include <iostream>
using namespace std;
int alt, sti, fni, mi, mj;
int main()
{
	for(int i=0; i<=199; i++)
	{
		sti=0;
		fni=199;
		while(sti<=fni)
		{
			mi=(sti+fni)/2;
			mj=i;
			cout<<mi<<" "<<mj<<"\n";
			cout.flush();
			cin>>alt;
			if(alt==0)
			{
				exit(0);
			}
			if(alt>0)
			{
				fni=mi-1;
			}
			if(alt<0)
			{
				sti=mi+1;
			}
		}
	}
		
}