#include <bits/stdc++.h>
#ifdef LOCAL
#include <debug.h>
#else
#define debug(...) 1001
#endif
using namespace std;
#define all(x) x.begin(), x.end()
#define st first
#define nd second
#define lb lower_bound
#define ub upper_bound
#define sz(x) (int)x.size()
#define pb push_back
#define pob pop_back
#define pf push_front
#define pof pop_front
#define file "TEMPLATE"
typedef long long ll;
typedef pair<int, int> ii;
typedef array<int, 3> iii;
typedef vector<int> vi;
typedef vector<ll> vl;
bool const SINGLE_TEST = 1;
bool ask(int l, int r){
cout << "? " << l << " " << r << "\n";
cout.flush();
bool ans; cin >> ans;
return ans;
}
void answer(string s){
cout << "!" << s << "\n";
cout.flush();
}
void solve(){
int n, q; cin >> n >> q;
string s(n + 1, ' ');
stack<int> st;
for (int i = 1; i <= n; i++){
if (!st.empty() && ask(st.top(), i)){
s[st.top()] = '(';
s[i] = ')';
st.pob();
}else st.pb(i);
}
int z = sz.size() / 2;
while (!st.empty()){
if (st.size() <= z) s[st.top()] = ')';
else s[st.top()] = '(';
st.pob();
}
answer(s);
}
int main(){
ios_base::sync_with_stdio(0);// the
cin.tie(0);cout.tie(0);// magical lines
// freopen(file".inp", "r", stdin);
// freopen(file".out", "w", stdout);
int t;
if (SINGLE_TEST) t = 1;
else cin >> t;
while (t--) solve();
return 0;
}//it's coding time!
Compilation message
zagrade.cpp: In function 'void solve()':
zagrade.cpp:17:13: error: 'class std::stack<int>' has no member named 'pop_back'
17 | #define pob pop_back
| ^~~~~~~~
zagrade.cpp:51:7: note: in expansion of macro 'pob'
51 | st.pob();
| ^~~
zagrade.cpp:16:12: error: 'class std::stack<int>' has no member named 'push_back'
16 | #define pb push_back
| ^~~~~~~~~
zagrade.cpp:52:12: note: in expansion of macro 'pb'
52 | }else st.pb(i);
| ^~
zagrade.cpp:55:10: error: 'sz' was not declared in this scope
55 | int z = sz.size() / 2;
| ^~
zagrade.cpp:57:17: warning: comparison of integer expressions of different signedness: 'std::stack<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
57 | if (st.size() <= z) s[st.top()] = ')';
| ^
zagrade.cpp:17:13: error: 'class std::stack<int>' has no member named 'pop_back'
17 | #define pob pop_back
| ^~~~~~~~
zagrade.cpp:59:6: note: in expansion of macro 'pob'
59 | st.pob();
| ^~~
