Submission #1214908

#	Time	Username	Problem	Language	Result	Execution time	Memory
1214908		jhe	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	73 ms	9800 KiB

Main

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

signed main() {
    int n,q;
    cin >> n >> q;
    vector<bool> v(n, 0);
    set<int> s;
    int cnt = 0;
    for (int _ = 0; _ < q; _++) {
        int a;
        cin >> a;
        if (a < 0) v[-1 * a] = false;
        else {
            if (v[a]) {
                if (s.find(a)!=s.end()) {
                    cnt++;
                    s.clear();
                }
                s.insert(a);
            }
            else {
                v[a] = true;
             
                s.insert(a);
            }
        }
    }
    cout << cnt << "\n";
}

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