#include <iostream>

using namespace std;

int ls,ld,cs,cd,val,c,l,i;
int main()
{
        ls=1;ld=200;
        cs=1;cd=200;
      for(i=1;i<=200;++i)
      {

            int l=i;
            while(cs<=cd)
            {
                int c=(cs+cd)/2;
                cout<<l<<" "<<c;
                cout.flush();
                cin>>val;
                if(val == 0) {return 0;}
                if(val > 0) {cd=c-1;}
                    else {cs = c+1;}
            }
        }
    return 0;
}