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Submission #695095

# Submission time Handle Problem Language Result Execution time Memory
695095 2023-02-04T17:38:52 Z NeroZein Bosses (BOI16_bosses) C++17
100 / 100
 611 ms 716 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 5001;
vector<int> g[N];

int cnt;
long long tmp;
int cost[N];
inline void bfs(int v, int d = 1) {
  queue<int> q; 
  tmp = cnt = 0; 
  memset(cost, -1, sizeof cost);
  cost[v] = 1; 
  q.push(v);
  while(!q.empty()) {
    cnt++;
    int src = q.front();
    tmp += cost[src];
    q.pop();
    for (int u : g[src]) {
      if (cost[u] == -1) {
        cost[u] = cost[src] + 1; 
        q.push(u);
      }
    }
  }
}

signed main() {
  int n;
  cin >> n;
  for (int i = 1; i <= n; ++i) {
    int k;
    cin >> k;
    for (int j = 0; j < k; ++j) {
      int x;
      cin >> x;
      g[x].push_back(i);
    }
  }
  long long ans = LLONG_MAX / 3; 
  for (int i = 1; i <= n; ++i) {
    bfs(i);
   if (cnt == n) {
      ans = min(ans, tmp);
   }
  }
  cout << ans << '\n';
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 420 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 420 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 420 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 420 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 420 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 420 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 420 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 5 ms 548 KB Output is correct
13 Correct 4 ms 480 KB Output is correct
14 Correct 104 ms 532 KB Output is correct
15 Correct 6 ms 468 KB Output is correct
16 Correct 473 ms 716 KB Output is correct
17 Correct 581 ms 636 KB Output is correct
18 Correct 611 ms 628 KB Output is correct