Submission #1297167

#	Time	Username	Problem	Language	Result	Execution time	Memory
1297167		vedchoudhary	Infinite Race (EGOI24_infiniterace2)	C++20	29 / 100	42 ms	584 KiB

Main

#include <bits/stdc++.h>
#pragma GCC optimize("O3")

using namespace std;

using ll = long long;

int main() {
    int n,q; cin >> n >> q;
    vector<bool> ahead(n,true);
    vector<ll> lap(1,0);
    while(q--) {
        int x; cin >> x;
        if(x>0) {
            if(ahead[x]) {
                ahead[x] = false;
            } else {
                lap[0]++;
                ahead[x] = false;
            }
        } else {
            x = -x;
            if(ahead[x]) {
                ahead[x] = true;
            } else {
                ahead[x] = true;
            }
        }
        // cout << lap[0] << "\n";
    }
    cout << lap[0];
    return 0;
}

• Subtask 1: 29 / 29
• Subtask 2: 0 / 34
• Subtask 3: 0 / 22
• Subtask 4: 0 / 15