Submission #1205431

#	Time	Username	Problem	Language	Result	Execution time	Memory
1205431		moondarkside	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	89 ms	9872 KiB

Main

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

int main()
{
    int n,q;
    cin>>n>>q;
    set<int> Atras;
    int laps=0;
    for(int i=0;i<q;i++){
        int adl;
        cin>>adl;
        if(adl<0){
            Atras.erase(-adl);
        }
        else{
            if(Atras.contains(adl)){
                laps++;
                Atras.clear();
                Atras.insert(adl);
            }
            else{
                Atras.insert(adl);
            }
        }
    }
    cout<<laps;
    return 0;
}

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