Submission #426337

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
426337	2021-06-13 18:30:16	dolphingarlic	The short shank; Redemption (BOI21_prison)	C++14	100 / 100	452 ms	125052 KiB

prison

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#include <bits/stdc++.h>
using namespace std;
int depth[2000001], mx_child[2000001];
vector<int> children[2000001];
int main() {
  cin.tie(0)->sync_with_stdio(0);
  int n, d, tx;
  cin >> n >> d >> tx;
  int ans = n, glob_mx = 0, loc_mx = 0;
  priority_queue<pair<int, int>> pq;
  stack<pair<int, int>> stck;
  for (int i = 1; i <= n; i++) {
    int t;
    cin >> t;
    glob_mx = max(glob_mx, i + tx - t);
    loc_mx = max(loc_mx, i + tx - t);
    if (stck.size())
      stck.top().second = max(stck.top().second, loc_mx);
    if (t > tx) {
      if (glob_mx < i) ans--;
      else {
        depth[i] = 1;
        while (stck.size()) {
          int node, tmp_mx;
          tie(node, tmp_mx) = stck.top();
          if (tmp_mx >= i) break;
          children[i].push_back(node);
 
 
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• Subtask 1: 15 / 15
• Subtask 2: 10 / 10
• Subtask 3: 20 / 20
• Subtask 4: 10 / 10
• Subtask 5: 25 / 25
• Subtask 6: 20 / 20