#include <bits/stdc++.h>
#define ll long long
#define inf 1000000

using namespace std;
string gt, lt, nf;
bool suc;

string qry(int x, int y) {
    cout << x << " " << y << endl;
    string ret;
    getline(cin, ret);
    if (ret.back() == '!') exit(0);
    return ret;
}

void solve(int xl, int xr, int yl, int yr) {
    if (xl == xr && yl == yr) {
        qry(xl, yl);
        return;
    }

    int txl = xl, tyl = yl, txr = xr, tyr = yr;
    if (xl == xr) {
        string ret = qry(xr, yr);
        if (ret == lt)
            tyl = (yl + yr) / 2 + 1;
        else if (ret == gt)
            tyr = (yl + yr - 1) / 2;
        else
            tyl = tyr = (yl + yr) / 2;
    } else if (yl == yr) {
        string ret = qry(xr, yl);
        if (ret == lt)
            txl = (xl + xr) / 2 + 1;
        else if (ret == gt)
            txr = (xl + xr - 1) / 2;
        else
            txl = txr = (xl + xr) / 2;
    } else {
        string ret1 = qry(xr, yl);
        if (ret1 == lt)
            txl = (xl + xr) / 2 + 1;
        else if (ret1 == gt)
            txr = (xl + xr - 1) / 2;
        else
            txl = txr = (xl + xr) / 2;
        string ret2 = qry(xr, yr);
        if (ret2 == lt)
            tyl = (yl + yr) / 2 + 1;
        else if (ret2 == gt)
            tyr = (yl + yr - 1) / 2;
        else
            tyl = tyr = (yl + yr) / 2;
    }
    qry(txl, tyl);
    solve(txl, txr, tyl, tyr);
    return;
}

signed main() {
    nf = qry(1, 0);
    string x1 = qry(0, 0);
    string y2 = qry(0, 1);
    string y1 = qry(0, 0);
    if (x1 == y1) {
        gt = x1, lt = y2;
        solve(0, inf, 0, inf);
    } else {
        qry(0, inf), qry(inf, 0), qry(inf, inf);
        lt = qry(inf, inf - 1);
        if (lt == y2)
            gt = y1, qry(0, 0), solve(0, 0, 1, inf - 1);
        else
            gt = y2, qry(0, 0), solve(1, inf - 1, 0, 0);
    }
    return 0;
}