#include <bits/stdc++.h>
using namespace std;
#define int long long
//#define faster ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
char dizi[100005];
vector <string> x;
vector <int> q;
int sor(int x,int y){
cout<<"? "<<x<<" "<<y;
cout<<endl;
int m;cin>>m;
return m;
}
int32_t main(){
// faster
q.clear();
int n,k;
cin>>n>>k;
dizi[1]='(';
q.push_back(1);
for(int i=2;i<=n;i++){
if(q.size() && sor(q.back(),i)){
dizi[i]=')';
q.pop_back();
}
else{
dizi[i]='(';
q.push_back(i);
}
}
int gc=q.size()/2;
for(int i=0;i<=gc-1;i++){
dizi[q[i]]=')';
}
cout<<"! ";
for(int i=1;i<=n;i++)cout<<dizi[i];
cout<<endl;
return 0;
}
