#include<iostream>
using namespace std;
int a[205][205];
int main()
{
    int x=0,y=0,X,Y,N,i;
    cout<<x<<" "<<y<<"\n";
    cout.flush();
    cin>>N;
    while (N)
    {
        if (N<0)
        {
            ++x, ++y;
            cout<<x<<" "<<y<<"\n";
            cout.flush();
            cin>>N;
        }
        else
            break;
    }
    if (!N)
        return 0;
    X=x, Y=y;
    do
    {
        for (i=x-1;i>=0;--i)
        {
            cout<<i<<" "<<y<<"\n";
            cout.flush();
            cin>>N;
            if (!N)
                return 0;
            if (N<0)
                break;
        }
        for (i=y-1;i>=0;--i)
        {
            cout<<x<<" "<<i<<"\n";
            cout.flush();
            cin>>N;
            if (!N)
                return 0;
            if (N<0)
                break;
        }
        --x, ++y;
        cout<<x<<" "<<y<<"\n";
        cout.flush();
        cin>>N;
        if (!N)
            return 0;
        if (N<0)
            break;
    } while (x);
    x=X, y=Y;
    do
    {
        for (i=x-1;i>=0;--i)
        {
            cout<<i<<" "<<y<<"\n";
            cout.flush();
            cin>>N;
            if (!N)
                return 0;
            if (N<0)
                break;
        }
        for (i=y-1;i>=0;--i)
        {
            cout<<x<<" "<<i<<"\n";
            cout.flush();
            cin>>N;
            if (!N)
                return 0;
            if (N<0)
                break;
        }
        --y, ++x;
        cout<<x<<" "<<y<<"\n";
        cout.flush();
        cin>>N;
        if (!N)
            return 0;
        if (N<0)
            break;
    } while (y);
    return 0;
}