#include <bits/stdc++.h>
using namespace std;
using i64 = int64_t;

int n;

int query(int l, int r) {
    string s(n, '0');
    fill(s.begin() + l - 1, s.begin() + r, '1');
    cout << "? " << s << endl;
    int x; cin >> x; return x;
}

bool solve(int l, int r, int out = 0) {
    if (l == r) return true;
    int mid = (l + r) >> 1;
    int cl = query(l, mid), cr = query(mid + 1, r);
    if (cl + cr == out) return false;
    return solve(l, mid, cl) && solve(mid + 1, r, cr);
}

int main() {
    cin >> n;
    bool ans = solve(1, n);
    cout << "! " << (int)ans << endl;
}