Submission #1189293

#	Time	Username	Problem	Language	Result	Execution time	Memory
1189293		Nomio	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	65 ms	9800 KiB

Main

#include<bits/stdc++.h>
using namespace std;
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin >> n;
	int q;
	cin >> q;
	set<int> s;
	int ans = 0;
	while(q--) {
		int x;
		cin >> x;
		if(x < 0) s.erase(-x);
		else {
			if(s.count(x)) {
				ans++;
				s.clear();
			}
			s.insert(x);
		}
	}
	cout << ans << '\n';
	return 0;
}

• Subtask 1: 29 / 29
• Subtask 2: 34 / 34
• Subtask 3: 22 / 22
• Subtask 4: 15 / 15