Submission #1162578

#	Time	Username	Problem	Language	Result	Execution time	Memory
1162578		Lucpp	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	69 ms	9800 KiB

Main

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define sz(x) (int)size(x)
#define all(x) (x).begin(), (x).end()

void solve(){
	int n, q;
	cin >> n >> q;
	set<int> s;
	int ans = 0;
	for(int i = 0; i < q; i++){
		int x;
		cin >> x;
		if(x > 0){
			if(s.count(x)){
				ans++;
				s.clear();
				s.insert(x);
			}
			else s.insert(x);
		}
		else{
			s.erase(-x);
		}
	}
	cout << ans << "\n";
}

int main(){
	cin.tie(0)->sync_with_stdio(false);
	solve();
}

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