#include <bits/stdc++.h>
using namespace std;
int query(int a, int b, int &Q)
{
cout << "? " << a << " " << b << endl;
int resp; cin >> resp;
return resp;
}
void solve(int N, int Q)
{
string resp(N, '.');
vector<int> resto;
for (int i = 1; i <= N; i++)
{
if (resto.empty()) resto.push_back(i);
else if(query(resto.back(), i, Q))
{
resp[resto.back()-1] = '(';
resp[i-1] = ')';
resto.pop_back();
}
else resto.push_back(i);
}
// cerr << "resp: " << resp << '\n';
// cerr << "resto: "; for (auto x : resto) cerr << " "; cerr << '\n';
int sz = resto.size();
for (int i = 0; i < sz/2; i++) resp[resto[i]-1] = ')';
for (int i = sz/2; i < sz; i++) resp[resto[i]-1] = '(';
cout << "! " << resp << endl;
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int N, Q;
cin >> N >> Q;
solve(N, Q);
}
