#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define F first
#define S second
#define pb push_back
#define endl "\n"
#define all(x) x.begin(), x.end()
const int M = 500007;
const ll inf = 2e9;
const ll mod = 1e9 + 7;
const double pi = acos(-1);
const double eps = 1e-6;
const int dx[] = {0, -1, 0, 1}, dy[] = {1, 0, -1, 0};
const int block = 320;
vector <int> v;
char ans[M];
int n, q;
int ask(int l, int r){
cout << "? " << l << " " << r << endl;
cout.flush();
int ret; cin >> ret;
return ret;
}
int main(){
// ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> q;
for(int i = 1; i <= n; ++i){
if(v.empty() || !ask(v.back(), i)) v.pb(i), ans[i] = '(';
else v.pop_back(), ans[i] = ')';
}
int rem = v.size() / 2;
while(rem--) ans[v.back()] = ')', v.pop_back();
while(v.size()) ans[v.back()] = '(', v.pop_back();
cout << "! ";
for(int i = 1; i <= n; ++i) if(ans[i]) cout << ans[i];
cout << endl;
return 0;
}
