Submission #1092785

#	Time	Username	Problem	Language	Result	Execution time	Memory
1092785		juicy	Bosses (BOI16_bosses)	C++17	100 / 100	519 ms	780 KiB

bosses

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

int main() {
  ios::sync_with_stdio(false); cin.tie(nullptr);

  int n; cin >> n;
  vector<vector<int>> g(n);
  for (int i = 0; i < n; ++i) {
    int k; cin >> k;
    while (k--) {
      int j; cin >> j; --j;
      g[j].push_back(i);
    }
  }
  vector<int> d(n, -1);
  int res = 1e9;
  for (int r = 0; r < n; ++r) {
    fill(d.begin(), d.end(), -1);
    d[r] = 1;
    queue<int> q{{r}};
    while (q.size()) {
      int u = q.front(); q.pop();
      for (int v : g[u]) {
        if (d[v] == -1) {
          d[v] = d[u] + 1;
          q.push(v);
        } 
      }
    }
    if (!count(d.begin(), d.end(), -1)) {
      res = min(res, accumulate(d.begin(), d.end(), 0));
    }
  }
  cout << res;
  return 0;
}

• Subtask 1: 22 / 22
• Subtask 2: 45 / 45
• Subtask 3: 33 / 33