#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define int long long
#define maxn 500005
#define mi LLONG_MIN
#define ma LLONG_MAX
#define mod 1000000007
#define pb push_back
#define S second
#define F first
int ask(string s) {
int ans;
cout << "? " << s << endl;
cin >> ans;
return ans;
}
void answer(int a, int b) {
cout << "! " << a << " " << b << endl;
exit(0);
}
void solve() {
int n, a = -1, b = -1;
cin >> n;
string s(n, '0');
vector<pair<int, int>> hl;
hl.pb({0, n - 1});
while (true) {
fill(s.begin(), s.end(), '0');
for (auto [l, r] : hl) {
int m = (l + r) / 2;
for (int i = l; i <= m; i++) {
s[i] = '1';
}
}
if (ask(s) % 2) {
break;
}
int sz = hl.size();
for (int i = 0; i < sz; i++) {
auto [l, r] = hl[i];
int m = (l + r) / 2;
hl[i] = {l, m};
hl.pb({m + 1, r});
}
}
vector<pair<int, int>> rng;
for (auto [l, r] : hl) {
int m = (l + r) / 2;
rng.pb({l, m});
}
int l = 0, r = rng.size() - 1;
while (r > l) {
int m = (r + l) / 2;
fill(s.begin(), s.end(), '0');
for (int i = l; i <= m; i++) {
auto [x, y] = rng[i];
for (int r = x; r <= y; r++) {
s[r] = '1';
}
}
if (ask(s) % 2) {
r = m;
} else {
l = m + 1;
}
}
swap(l, rng[r].F);
swap(r, rng[r].S);
while (r > l) {
int m = (r + l) / 2;
fill(s.begin(), s.end(), '0');
for (int i = l; i <= m; i++) {
s[i] = '1';
}
if (ask(s) % 2) {
r = m;
} else {
l = m + 1;
}
}
a = r;
l = 0, r = n - 1;
while (r > l) {
int m = (r + l) / 2;
fill(s.begin(), s.end(), '0');
for (int i = l; i <= m; i++) {
s[i] = '1';
}
s[a] = '0';
if (ask(s) % 2) {
r = m;
} else {
l = m + 1;
}
}
b = r;
answer(a, b);
}
int32_t main() {
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int t = 1;
// cin >> t;
while (t--) solve();
}
