Submission #656068

#	Time	Username	Problem	Language	Result	Execution time	Memory
656068		Behradm	Bitaro’s Party (JOI18_bitaro)	C++17	14 / 100	2059 ms	10060 KiB

bitaro

/*\ In The Name Of GOD
 *  Beyrad :D
\*/
#include "bits/stdc++.h"

#define sz(x) ((int) (x).size())

using namespace std;

const int N = 2e5 + 5;
vector<int> g[N];

signed main() {
  ios::sync_with_stdio(false);
  cin.tie(0), cout.tie(0);
  int n, m, q;
  cin >> n >> m >> q;
  for (int i = 0; i < m; i++) {
    int u, v;
    cin >> u >> v;
    --u, --v;
    g[u].push_back(v);
  }

  while (q--) {
    int x, t;
    cin >> x >> t, x--;

    vector<int> dp(n, -1);
    dp[x] = 0;
    for (int i = x - 1; i >= 0; i--) {
      for (int j : g[i]) {
        if (dp[j] != -1)
          dp[i] = max(dp[i], 1 + dp[j]);
      }
    }

    vector<bool> mk(n);
    for (int i = 0; i < t; i++) {
      int y; 
      cin >> y, y--, mk[y] = 1;
    }

    int ans = -1;
    for (int i = 0; i < n; i++)
      if (!mk[i]) ans = max(ans, dp[i]);
    cout << ans << '\n';
  }
  return 0;
}

• Subtask 1: 7 / 7
• Subtask 2: 7 / 7
• Subtask 3: 0 / 86