#include <bits/stdc++.h>
using namespace std;
bool query(int l, int r) {
bool v;
cout << "? " << l << " " << r << endl;
cin >> v;
return v;
}
int main() {
int N, Q, j;
cin >> N >> Q;
vector<int> ans(N + 5, 0);
for (int i = 1; i < N; i++) {
if (ans[i]) continue;
j = 0;
while (query(i - j, i + j + 1)) {
ans[i - j] = 1;
ans[i + j + 1] = -1;
j++;
}
}
j = 1;
while (j <= N && !ans[j]) ans[j++] = -1;
j = N;
while (j > 0 && !ans[j]) ans[j--] = 1;
int S = 0;
vector<int> empty;
for (int i = 1; i <= N; i++) {
S += ans[i];
if (!ans[i]) empty.push_back(i);
}
int it = 0;
for (; it < (S + empty.size()) / 2; it++) {
ans[empty[it]] = -1;
}
for (; it < empty.size(); it++) {
ans[empty[it]] = 1;
}
cout << "! ";
for (int i = 1; i <= N; i++) {
if (ans[i] == 1) cout << "(";
else cout << ")";
}
cout << endl;
return 0;
}
