Submission #1148262

#	Time	Username	Problem	Language	Result	Execution time	Memory
1148262		MuhammadSaram	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	87 ms	9796 KiB

Main

#include <bits/stdc++.h>

using namespace std;

int main()
{
	int n,q,ans=0;
	cin>>n>>q;
	set<int> se;
	while (q--)
	{
		int x;
		cin>>x;
		if (x<0)
			se.erase(-x);
		else
		{
			if (se.find(x)!=se.end())
				ans++,se={x};
			else
				se.insert(x);
		}
	}
	cout<<ans<<endl;
	
	return 0;
}

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