#include <bits/stdc++.h>
#define X first
#define Y second
#define PB push_back
#define x first
#define y second
#define pb push_back
using namespace std;
using ll=long long;
using vi=vector<int>;
using vl=vector<ll>;
using pii=pair<int,int>;
#define all(a) begin(a),end(a)

const int N=300010,MOD=1e9+7;
const char en='\n';
const ll LLINF=1ll<<60;

int n;

vi vor(vi a,vi b)
{
	vi c(a.size());
	for (int i=0;i<(int)a.size();++i) c[i]=a[i]|b[i];
	return c;
}

int f(vi v)
{
	cout<<"? ";
	for (auto x: v) cout<<x;
	cout<<endl;
	int x;
	cin>>x;
	return x;
}

int main() {
	ios_base::sync_with_stdio(false); cin.tie(0);
	cin>>n;
	vi s(n);
	s[0]=1;
	while (s!=vi(n,1))
	{
		int c=f(s);
		if (c==0)
		{
			cout<<"! 0"<<endl;
			exit(0);
		}
		vi os;
		for (int i=0;i<n;++i) if (!s[i]) os.pb(i);
		int lo=0,hi=os.size()-1;
		while (lo<hi)
		{
			int mid=(lo+hi)/2;
			vi ti(n);
			for (int i=0;i<=mid;++i) ti[os[i]]=1;
			vi tix=vor(ti,s);
			if (f(tix)==c+f(ti)) lo=mid+1;
			else hi=mid;
		}
		s[os[lo]]=1;
	}
	cout<<"! "<<1<<endl;
}