제출 #1248797

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1248797		trufanov.p	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	15 ms	1864 KiB

Main

#include <iostream>
#include <vector>
#include <algorithm>
#include <cstring>
#include <cctype>
#include <string>
#include <queue>
#include <unordered_set>
#include <deque>
#include <numeric>
#include <cmath>
#include <unordered_map>
#include <set>

using namespace std;

#pragma GCC optimize("O3")
#pragma GCC optimization("Ofast,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

typedef long long ll;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n, q;
    cin >> n >> q;
    vector<pair<int, int>> over(n, {-1, 0});
    int ans = 0;
    for (int i = 0; i < q; ++i) {
        int x;
        cin >> x;
        if (x < 0) {
            over[-x] = { -1, ans };
        } else {
            if (over[x].second != ans || over[x].first == -1) {
                over[x] = { 1, ans };
            } else {
                ans++;
                over[x] = { 1, ans };
            }
        }
    }
    cout << ans << '\n';
}

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