Submission #104897

#	Time	Username	Problem	Language	Result	Execution time	Memory
104897		WLZ	Cake (CEOI14_cake)	C++17	0 / 100	2097 ms	9968 KiB

cake

#include <bits/stdc++.h>
using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, a;
  cin >> n >> a;
  vector< pair<int, int> > d(n);
  for (int i = 0; i < n; i++) {
    cin >> d[i].first;
    d[i].second = i + 1;
  }
  sort(d.rbegin(), d.rend());
  vector<int> top10;
  vector<int> v;
  for (int i = 0; i < min(10, n); i++) {
    top10.push_back(d[i].second);
  }
  for (int i = n; i >= 10; i--) {
    v.push_back(d[i].second);
  }
  int q;
  cin >> q;
  while (q--) {
    char t;
    cin >> t;
    if (t == 'F') {
      int b;
      cin >> b;
      int cur = n;
      vector<int> num(n + 1, -1);
      for (auto& x : top10) {
        if (num[x] == -1) {
          num[x] = cur--;
        }
      }
      for (int i = (int) v.size() - 1; i >= 0; i--) {
        if (num[v[i]] == -1) {
          num[v[i]] = cur--;
        }
      }
      priority_queue< pair<int, int>, vector< pair<int, int> >, greater< pair<int, int> > > pq;
      pq.push({num[a], a});
      int cnt = 0;
      while (!pq.empty()) {
        int x = pq.top().second;
        pq.pop();
        num[x] = -1;
        if (x == b) {
          cout << cnt << '\n';
        }
        cnt++;
        if (x > 1 && num[x - 1] != -1) {
          pq.push({num[x - 1], x - 1});
        }
        if (x < n && num[x + 1] != -1) {
          pq.push({num[x + 1], x + 1});
        }
      }
    } else {
      int i, e;
      cin >> i >> e;
      auto it = top10.begin();
      for (int j = 0; j < e - 1; j++) {
        it = next(it);
      }
      top10.insert(it, i);
      v.push_back(top10.back());
      top10.pop_back();
    }
  }
  return 0;
}

• Subtask 1: 0 / 15
• Subtask 2: 0 / 15
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50