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

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n; cin >> n;
    auto ask = [&](vector<int> ve) {
        string s(n, '0');
        for (int v : ve) {
            s[v] = '1';
        }
        cout << "? " << s << endl;
        int ret; cin >> ret; return ret;
    };

    vector<vector<int>> comp(n);
    for (int i = 0; i < n; i++) {
        comp[i].push_back(i);
    }
    vector<int> deg(n);
    for (int i = 0; i < n; i++) {
        deg[i] = ask(comp[i]);
    }
    while (comp.size() > 1) {
        int right_comp;
        {
            int le = 0, ri = comp.size();
            while (le + 1 < ri) {
                int mi = (le + ri) / 2;
                vector<int> big_comp;
                int tot = 0;
                for (int i = 0; i <= mi; i++) {
                    copy(comp[i].begin(), comp[i].end(), back_inserter(big_comp));
                    tot += deg[i];
                }
                (ask(big_comp) == tot ? le : ri) = mi;
            }
            if (ri == comp.size()) {
                return cout << "! 0" << endl, 0;
            }
            // troublemaker is component ri
            right_comp = ri;
        }
        // cerr << right_comp << '\n';
        int left_comp;
        {
            int le = -1, ri = right_comp;
            while (le + 1 < ri) {
                int mi = (le + ri) / 2;
                vector<int> big_comp;
                int tot = 0;
                for (int i = mi; i <= right_comp; i++) {
                    copy(comp[i].begin(), comp[i].end(), back_inserter(big_comp));
                    tot += deg[i];
                }
                (ask(big_comp) == tot ? ri : le) = mi;
            }
            // trouble maker is component le
            left_comp = le;
        }
        // cerr << left_comp << '\n';
        // merge them now
        copy(comp[right_comp].begin(), comp[right_comp].end(), back_inserter(comp[left_comp]));
        deg[left_comp] = ask(comp[left_comp]);
        comp.erase(comp.begin() + right_comp); deg.erase(deg.begin() + right_comp);
    }
    cout << "! 1" << endl;
}