oj.uz

Submission #651087

# Submission time Handle Problem Language Result Execution time Memory
651087 2022-10-17T02:38:49 Z _HDH Zagrade (COI20_zagrade) C++11
71 / 100
 958 ms 924 KB 
#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 = " (";
	deque<int> que;
	que.pb(1);
	for (int i = 2; i <= n; i++){
		if (que.empty()) que.pb(i), s.pb('(');
		else{
			if (ask(que.back(), i)){
				que.pob(), s.pb(')');
			}else que.pb(i), s.pb('(');
		}
	}
	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!

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 4 ms 208 KB Output is correct
3 Correct 11 ms 208 KB Output is correct
4 Correct 6 ms 312 KB Output is correct
5 Correct 10 ms 208 KB Output is correct
6 Correct 8 ms 312 KB Output is correct
7 Correct 4 ms 320 KB Output is correct
8 Correct 8 ms 208 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 208 KB Mismatch at position 1. Expected ), found (
2 Halted 0 ms 0 KB -

Subtask #3
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 285 ms 616 KB Output is correct
3 Correct 737 ms 632 KB Output is correct
4 Correct 550 ms 572 KB Output is correct
5 Correct 958 ms 740 KB Output is correct
6 Correct 704 ms 592 KB Output is correct
7 Correct 831 ms 924 KB Output is correct
8 Correct 743 ms 756 KB Output is correct

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 208 KB Mismatch at position 1. Expected ), found (
2 Halted 0 ms 0 KB -