#include <bits/stdc++.h>
using namespace std;
using ll = long long;

const int N = 50;

int main() {
    cin.tie(0)->sync_with_stdio(0);

    string s; cin >> s;
    for(int i=1;i<=N;i++) {
        cout << "? right" << endl;
        char c; cin >> c;
        s += c;
    }
    cout << "? flip" << endl;
    char c; cin >> c;
    s.pop_back();

    for(int i=1;i<=N;i++) {
        cout << "? left" << endl;
        char c; cin >> c;
        if(s.back() != c) return cout << "! " << i << endl, 0;
        s.pop_back();
    }

    srand(time(NULL));
    for(int i=0;i<N;i++) s.push_back('0'+rand()%2);

    for(int i=0;i<N;i++) {
        cout << "? right" << endl;
        char c; cin >> c;
        if(s[i] != c) {
            cout << "? flip" << endl;
            char c; cin >> c;
        }
    }

    string t;
    for(int i=N;;i++) {
        cout << "? right" << endl;
        char c; cin >> c;
        t += c;

        if(t.size() == s.size()) {
            if(t == s) return cout << "! " << i-N+1 << endl, 0;
            t.erase(t.begin());
        }
    }
}