Submission #1260425

#	Time	Username	Problem	Language	Result	Execution time	Memory
1260425		kawhiet	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	67 ms	9796 KiB

Main

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

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, q;
    cin >> n >> q;
    set<int> s;
    int res = 0;
    while (q--) {
        int x;
        cin >> x;
        if (x > 0) {
            if (s.count(x)) {
                res++;
                s.clear();
            }
            s.insert(x);
        }
        else {
            s.erase(-x);
        }
    }
    cout << res << '\n';
    return 0;
}

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