Submission #583138

#	Time	Username	Problem	Language	Result	Execution time	Memory
583138		Markomafko972	Zagrade (COI20_zagrade)	C++14	100 / 100	860 ms	1016 KiB

zagrade

#include <bits/stdc++.h>
using namespace std;

int n, q, odg;
stack<int> s;
char sol[100005];

int main () {
	
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	
	cin >> n >> q;
	for (int i = 1; i <= n; i++) {
		if (s.size() == 0) {
			s.push(i);
			continue;
		}
		
		cout << "? " << s.top() << " " << i << endl;
		cin >> odg;
		if (odg == 0) {
			s.push(i);
		}
		else {
			sol[s.top()] = '(';
			sol[i] = ')';
			s.pop();
		}
	}
	
	int kol = (int)s.size()/2;
	while ((int)s.size() > kol) {
		sol[s.top()] = '(';
		s.pop();
	}
	while ((int)s.size() > 0) {
		sol[s.top()] = ')';
		s.pop();
	}
	
	cout << "! ";
	for (int i = 1; i <= n; i++) cout << sol[i];
	
	return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 7 / 7
• Subtask 3: 57 / 57
• Subtask 4: 22 / 22