Submission #1129729

#	Time	Username	Problem	Language	Result	Execution time	Memory
1129729		khangrl	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	112 ms	9784 KiB

Main

#include<bits/stdc++.h>
#define int long long
#define pb push_back
using namespace std;
signed main(){
	bool to[200005]={0};
	set <int> s;
	map <int, int> mp;
	int n, q, ans=0;
	cin>>n>>q;
	for(int i=1; i<=q; i++){
		int e;
		cin>>e;
		if(abs(e)==e){
			if(s.count(e)){
				ans++;
				s.clear();
				s.insert(e);
			}
			else{
				s.insert(e);
			}
		}
		else{
			e*=-1;
			s.erase(e);
		}
	}
	cout<<ans;
}

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