Submission #1171686

#	Time	Username	Problem	Language	Result	Execution time	Memory
1171686		tatas	Pizza (COCI21_pizza)	C++20	50 / 50	0 ms	396 KiB

Main

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

typedef long long ll;
typedef vector<int> vi;
#define endl '\n'

void solve()
{
    int n;
    cin >> n;
    
    unordered_set<int> disliked;
    for (int i = 0; i < n; i++)
    {
        int x;
        cin >> x;
        disliked.insert(x); // Menggunakan unordered_set untuk akses O(1)
    }

    int m, ans = 0;
    cin >> m;

    while (m--)
    {
        int k;
        cin >> k;
        bool ok = true;

        for (int i = 0; i < k; i++)
        {
            int x;
            cin >> x;
            if (disliked.count(x)) // Cek dalam O(1) dengan unordered_set
            {
                ok = false;
            }
        }
        
        if (ok)
            ans++;
    }
    
    cout << ans << endl;
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    
    solve();
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10