#include <cstdio>
#define inf 0x3f3f3f3f
using namespace std;
long long val;
int i,j,st,dr,mij;
int main()
{
    st=0;
    dr=199;
    while(st<=dr)
    {
        mij=st+(dr-st)/2;
        printf("%d %d\n",mij,0);
        fflush(stdout);
        scanf("%lld",&val);
        if(val<0)
            st=mij+1;
        else dr=mij-1;
    }
    i=st-1;
    st=0;
    dr=199;
    while(st<=dr)
    {
        mij=st+(dr-st)/2;
        printf("%d %d\n",i,mij);
        fflush(stdout);
        scanf("%lld",&val);
        if(val<0)
            st=mij+1;
        else dr=mij-1;
    }
    return 0;
}