Submission #1305454

#	Time	Username	Problem	Language	Result	Execution time	Memory
1305454		the_commando_x	Alkemija (COCI18_alkemija)	C++17	80 / 80	33 ms	10968 KiB

alkemija

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

using namespace std;

using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;

using pii = pair<int, int>;
using vii = vector<pii>;
using vvii = vector<vii>;

using l = long long;
using vl = vector<l>;
using vvl = vector<vl>;
using vvvl = vector<vvl>;

using pll = pair<l, l>;
using vll = vector<pll>;
using vvll = vector<vll>;

using d = double;
using vd = vector<d>;
using vvd = vector<vd>;
using vvvd = vector<vvd>;

using ld = long double;
using vld = vector<ld>;
using vvld = vector<vld>;
using vvvld = vector<vvld>;

using vb = vector<bool>;
using vvb = vector<vb>;
using pbb = pair<bool, bool>;
using vbb = vector<pbb>;

#define ff first
#define ss second

#define pb push_back
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) (int)(x).size()

void setIO(string name = "")
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if (!name.empty())
    {
        (void)freopen((name + ".in").c_str(), "r", stdin);
        (void)freopen((name + ".out").c_str(), "w", stdout);
    }
}

const ld pi = 3.14159265358979323846;

const l LINF = 1e18;
const l INF = 1e9;

const l MOD = 1e9 + 7;
// const l MOD = 998244353;

const l MAXN = 2e5 + 5;

vvi adj(MAXN);

vi vis(MAXN), freq(MAXN);

queue<int> q;

void solve()
{
    int n, m;
    cin >> n >> m;

    for (int i = 1, x; i <= m && cin >> x; ++i)
        if (!vis[x])
            q.push(x), vis[x] = true;

    int k;
    cin >> k;

    for (int i = 1; i <= k; ++i)
    {
        int L, R, x;
        cin >> L >> R;

        freq[i + n] = L;

        while (L--)
        {
            cin >> x;
            adj[x].push_back(i + n);
        }
        while (R--)
        {
            cin >> x;
            adj[i + n].push_back(x);
        }
    }

    while (q.size())
    {
        int u = q.front();
        q.pop();

        for (auto v : adj[u])
        {
            if (--freq[v] != 0)
                continue;

            for (auto x : adj[v])
                if (!vis[x])
                    q.push(x), vis[x] = true;
        }
    }

    int ans = accumulate(all(vis), 0);

    vi b;
    for (int i = 1; i <= n; ++i)
        if (vis[i])
            b.push_back(i);

    cout << ans << "\n";
    for (auto x : b)
        cout << x << " ";
}

int main()
{
    setIO("");

#ifndef ONLINE_JUDGE
    // setIO("filename");
#endif

    int t = 1;
    // cin >> t;
    while (t--)
        solve();

    return 0;
}

Compilation message (stderr)

alkemija.cpp: In function 'void setIO(std::string)':
alkemija.cpp:53:22: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |         (void)freopen((name + ".in").c_str(), "r", stdin);
      |               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
alkemija.cpp:54:22: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |         (void)freopen((name + ".out").c_str(), "w", stdout);
      |               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 8 / 8
• Subtask 3: 8 / 8
• Subtask 4: 8 / 8
• Subtask 5: 8 / 8
• Subtask 6: 8 / 8
• Subtask 7: 8 / 8
• Subtask 8: 8 / 8
• Subtask 9: 8 / 8
• Subtask 10: 8 / 8