Submission #1237511

#	Time	Username	Problem	Language	Result	Execution time	Memory
1237511		User918	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	78 ms	12920 KiB

Main

#include <bits/stdc++.h>
#define ft first
#define sd second
#define pb push_back
#define nl "\n"
#define int long long
typedef long long ll;
typedef long double ld;
using namespace std;

const int N = 100100;
const int mod = 1e9 + 7;

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n, q;
    cin >> n >> q;
    map<int, int> v;
    int k = 0;
    while(q--) {
        int x;
        cin >> x;
        if (x > 0) {
            if (v[x] == 1) {
                k += 1;
                v.clear();
            }
            v[x] += 1;
        } else {
            v[-x] = max(0ll, v[-x] - 1);
        }
    }
    cout << k;
}

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