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Submission #520687

# Submission time Handle Problem Language Result Execution time Memory
520687 2022-01-30T20:05:17 Z Alex_tz307 Bosses (BOI16_bosses) C++17
0 / 100
 1 ms 428 KB 
#include <bits/stdc++.h>
#define INF 0x3f3f3f3f

using namespace std;

const int kN = 5e3;
vector<int> t[1 + kN];
int sum;

int dfs(int u, int par) {
  int salary = 1;
  for (int v : t[u]) {
    if (v != par) {
      salary += dfs(v, u);
    }
  }
  sum += salary;
  return salary;
}

void minSelf(int &x, int y) {
  if (y < x) {
    x = y;
  }
}

void testCase() {
  int n;
  cin >> n;
  vector<vector<int>> g(n + 1);
  for (int v = 1; v <= n; ++v) {
    int k;
    cin >> k;
    for (int i = 0; i < k; ++i) {
      int u;
      cin >> u;
      g[u].emplace_back(v);
    }
  }
  int ans = INF;
  for (int root = 1; root <= n; ++root) {
    for (int v = 1; v <= n; ++v) {
      t[v].clear();
    }
    queue<int> q;
    q.emplace(root);
    vector<bool> vis(n + 1);
    vis[root] = true;
    while (!q.empty()) {
      int u = q.front();
      q.pop();
      for (int v : g[u]) {
        if (!vis[v]) {
          t[u].emplace_back(v);
          q.emplace(v);
          vis[v] = true;
        }
      }
    }
    sum = 0;
    dfs(root, 0);
    minSelf(ans, sum);
  }
  cout << ans << '\n';
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  int tests = 1;
  for (int tc = 0; tc < tests; ++tc) {
    testCase();
  }
  return 0;
}

Subtask #1
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 428 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 428 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 428 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -