#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ll long long
#define pii pair<int, int>
#define fi first
#define se second
#define rep(i, a, b) for (int i = a; i <= b; ++i)
#define per(i, b, a) for (int i = b; i >= a; --i)
#define pb push_back
#define all(v) (v).begin(), (v).end()
const int MAXN = 2e5 + 10;
const int INF = 1e18 + 5;
const int MOD = 1e9 + 7;
int query(int l, int r) {
int ans;
cout << "? " << l << " " << r << endl;
cin >> ans;
return ans;
}
int32_t main() {
int n,q;cin >> n >> q;
char pfx[n+10] = {};
vector<int> idx;
rep(i,1,n) {
if (idx.empty()) {
idx.pb(i);
continue;
}
int x = query(idx.back(),i);
if (x == 1) {
pfx[idx.back()] = '(';
pfx[i] = ')';
idx.pop_back();
} else {
idx.pb(i);
}
}
rep(i,0,(int)idx.size()-1) pfx[idx[i]] = (i < idx.size()/2 ? ')' : '(');
cout << "! ";
rep(i,1,n) cout << pfx[i];
cout << endl;
return 0;
}
