oj.uz

Submission #373618

# Submission time Handle Problem Language Result Execution time Memory
373618 2021-03-05T09:36:28 Z wind_reaper Zagrade (COI20_zagrade) C++17
100 / 100
 901 ms 1424 KB 
#include <bits/stdc++.h>

using namespace std;

int32_t main(){
	ios_base::sync_with_stdio(false); 
	cin.tie(NULL); 
	
	int n, q;
	cin >> n >> q;
	vector<char> ans(n, '.');
	vector<int> st;
	for(int i = 0; i < n; i++){
		if(st.empty()){
			st.push_back(i);
			continue;
		}
		cout << "? " << st.back() + 1 << ' ' << i + 1 << endl;
		bool v;
		cin >> v;
		if(v){
			ans[st.back()] = '(', ans[i] = ')';
			st.pop_back();
		}
		else st.push_back(i);
	}
	for(int i = 0; i < st.size() / 2; i++)
		ans[st[i]] = ')';
	for(int i = st.size()/2; i < st.size(); i++)
		ans[st[i]] = '(';
	cout << "! ";
	for(int i = 0; i < n; i++)
		cout << ans[i];
	return 0; 
}

Compilation message

zagrade.cpp: In function 'int32_t main()':
zagrade.cpp:27:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |  for(int i = 0; i < st.size() / 2; i++)
      |                 ~~^~~~~~~~~~~~~~~
zagrade.cpp:29:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |  for(int i = st.size()/2; i < st.size(); i++)
      |                           ~~^~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 6 ms 364 KB Output is correct
3 Correct 8 ms 364 KB Output is correct
4 Correct 10 ms 364 KB Output is correct
5 Correct 9 ms 364 KB Output is correct
6 Correct 10 ms 364 KB Output is correct
7 Correct 9 ms 364 KB Output is correct
8 Correct 9 ms 364 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 10 ms 364 KB Output is correct
3 Correct 9 ms 364 KB Output is correct
4 Correct 12 ms 384 KB Output is correct
5 Correct 9 ms 364 KB Output is correct
6 Correct 7 ms 364 KB Output is correct
7 Correct 10 ms 364 KB Output is correct
8 Correct 6 ms 364 KB Output is correct

Subtask #3
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 413 ms 492 KB Output is correct
3 Correct 674 ms 492 KB Output is correct
4 Correct 811 ms 620 KB Output is correct
5 Correct 726 ms 620 KB Output is correct
6 Correct 741 ms 492 KB Output is correct
7 Correct 750 ms 944 KB Output is correct
8 Correct 733 ms 620 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 766 ms 1424 KB Output is correct
3 Correct 723 ms 820 KB Output is correct
4 Correct 738 ms 1180 KB Output is correct
5 Correct 832 ms 940 KB Output is correct
6 Correct 835 ms 1132 KB Output is correct
7 Correct 901 ms 876 KB Output is correct
8 Correct 861 ms 496 KB Output is correct