Submission #1117552

#	Time	Username	Problem	Language	Result	Execution time	Memory
1117552		stefanneagu	Political Development (BOI17_politicaldevelopment)	C++17	4 / 100	26 ms	63736 KiB

politicaldevelopment

#include <bits/stdc++.h>

using namespace std;

const int nmax = 5e4 + 2;

vector<int> adj[nmax];
bitset<nmax> f1[nmax], f2[nmax];

int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  int n, k;
  cin >> n >> k;
  for(int i = 1; i <= n; i++) {
    int d;
    cin >> d;
    f1[i][i] = f2[i][i] = 1;
    while(d--) {
      int j;
      cin >> j;
      j++;
      adj[i].push_back(j);
      f1[i][j] = 1;
      f2[i][j] = 1;
    }
  }
  int ans = 0;
  for(int i = 1; i <= n; i++) {
    for(auto it : adj[i]) {
      f2[i] = (f2[i] & f1[it]);
    }
    ans = max(ans, (int) f2[i].count());
  }
  cout << ans;
	return 0;
}

• Subtask 1: 4 / 4
• Subtask 2: 0 / 12
• Subtask 3: 0 / 23
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23