#include <bits/stdc++.h>

using i64 = long long;
using u64 = unsigned long long;
using u32 = unsigned;
using u128 = unsigned __int128;

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

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    
    int n;
    std::cin >> n;
    
    std::vector<bool> vis(n);
    std::queue<int> q;
    q.push(0);
    vis[0] = true;
    
    while (!q.empty()) {
        int x = q.front();
        q.pop();
        
        int qx;
        {
            std::string s(n, '0');
            s[x] = '1';
            qx = query(s);
        }
        
        std::vector<int> a;
        for (int i = 0; i < n; i++) {
            if (!vis[i]) {
                a.push_back(i);
            }
        }
        
        if (!a.empty()) {
            auto work = [&](this auto &&self, int l, int r) -> void {
                std::string s(n, '0');
                
                for (int i = l; i < r; i++) {
                    s[a[i]] = '1';
                }
                
                int qs = query(s);
                
                s[x] = '1';
                if (query(s) == qs + qx) {
                    return;
                }
                
                if (r - l == 1) {
                    int y = a[l];
                    vis[y] = true;
                    q.push(y);
                    return;
                }
                
                int m = (l + r) / 2;
                self(l, m);
                self(m, r);
            };
            work(0, a.size());
        }
    }
    
    if (std::find(vis.begin(), vis.end(), false) != vis.end()) {
        std::cout << "! 0" << std::endl;
    } else {
        std::cout << "! 1" << std::endl;
    }
    
    return 0;
}