#include <bits/stdc++.h>

using namespace std;

int query(string s){
    cout << "? " << s << endl;
    int a;
    cin >> a;
    return a;
}

const int C = 100;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(NULL);

    int curr;
    cin >> curr;
    static bool pat[C];
    mt19937 mt(342343);
    for(int i = 0; i < C; ++i){
        pat[i] = mt() % 2;
        if(curr != pat[i]){
            query("flip");
        }
        curr = query("right");
    }
    bool small = false;
    for(int i = 0; i < C; ++i){
        curr = query("left");
        if(pat[C - 1 - i] != curr){
            small = true;
            break;
        }
    }

    if(small){
        for(int i = 0; i < C; ++i){
            if(curr)
                query("flip");
            curr = query("right");
        }
        query("flip");
        for(int n = 1; true; ++n){
            curr = query("right");
            if(curr){
                cout << "! " << n << endl;
                return 0;
            }
        }
    }

    vector<int> buffer;
    for(int i = 1; true; ++i){
        buffer.push_back(query("left"));
        if(buffer.size() >= C){
            bool ok = true;
            for(int j = 0; j < C; ++j)
                if(buffer[(int)buffer.size() - 1 - j] != pat[j]){
                    ok = false;
                    break;
                }
            if(ok){
                cout << "! " << i << endl;
                return 0;
            }
        }
    }
}