#include <bits/stdc++.h>
#define int long long
#define pb push_back
#define pii pair<int,int>
#define fr first
#define sc second
#define query(l, r) cout << "? " << l << " " << r << endl; cin >> res;
using namespace std;
const int N = 1e5+5;
string ans; bool res;
signed main() {
ios_base::sync_with_stdio(false);
cout.tie(NULL);
cin.tie(NULL);
int n, q; cin >> n >> q;
ans.assign(n, ' ');
stack<int> s;
s.push(1);
for (int i = 2; i <= n; i++) {
if (s.empty()) {
s.push(i);
continue;
}
int cur = s.top();
query(cur, i);
if (res) {
ans[cur-1] = '(';
ans[i-1] = ')';
s.pop();
} else s.push(i);
}
cout << "! " << ans << endl;
}
