#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "C:\debug.h"
#else
#define debug(...) 42
#endif
bool ask(int l, int r) {
cout << "? " << l + 1 << " " << r + 1 << endl;
bool x; cin >> x; return x;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, q; cin >> n >> q;
string res(n, ')');
vector<int> st;
for (int i = 0; i < n; ++i) {
if (!st.empty() && ask(st.back(), i)) {
res[st.back()] = '(';
st.pop_back();
} else st.push_back(i);
}
for (int i = st.size() / 2; i < (int) st.size(); ++i) res[st[i]] = '(';
cout << "! " << res << endl;
}
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