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Submission #884321

# Submission time Handle Problem Language Result Execution time Memory
884321 2023-12-07T06:50:02 Z vjudge1 Bosses (BOI16_bosses) C++17
0 / 100
 1 ms 604 KB 
#include <bits/stdc++.h>
#define file_io freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);
#define fast_io ios::sync_with_stdio(false);cin.tie(0);
#define what(x) cerr << #x << " is " << x << '\n';
#define kill(x) {cout << x << '\n'; return 0;}
#define all(x) (x).begin(), (x).end()
#define pii pair<int, int>
#define pb push_back
#define ll long long
#define F first
#define S second
const ll inf = 1e18, mod = 1e9 + 7, delta = 1e9 + 9, SQ = 450, P = 6065621;
 
using namespace std;

const ll N = 5e3 + 10, LG = 20;
vector<int> adj[N];
vector<int> G[N];
bitset<N> mark;
int dp[N];

void dfs (int v) {
  dp[v] = 1;
  for (auto u: G[v]) {
    dfs(u);
    dp[v] += dp[u];
  }
}

int main() {
  fast_io;
  int n, ans = INT_MAX;
  cin >> n;
  for (int i = 1; i <= n; i++) {
    int k, x;
    cin >> k;
    while (k--) {
      cin >> x;
      adj[x].pb(i);
    }
  }
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= n; j++)
      G[j].clear();
    queue<int> q;
    mark.reset();
    q.push(i);
    mark[i] = true;
    while (q.size()) {
      int v = q.front();
      q.pop();
      for (auto u: adj[v]) {
        if (!mark[u]) {
          q.push(u);
          mark[u] = true;
          G[v].pb(u);
        }
      }
    }
    dfs(i);
    int sum = 0;
    for (int j = 1; j <= n; j++)
      sum += dp[j];
    ans = min(ans, sum);
  }
  cout << ans << '\n';
  return 0;
}

Subtask #1
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Incorrect 1 ms 604 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Incorrect 1 ms 604 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Incorrect 1 ms 604 KB Output isn't correct
5 Halted 0 ms 0 KB -