Submission #1218273

#	Time	Username	Problem	Language	Result	Execution time	Memory
1218273		lopkus	Financial Report (JOI21_financial)	C++20	48 / 100	4094 ms	9904 KiB

Main

#include <bits/stdc++.h>

#define int int64_t

void solve() {
  int n, d;
  std::cin >> n >> d;
  std::vector<int> a(n + 1);
  for(int i = 1; i <= n; i++) {
    std::cin >> a[i];
  }
  std::vector<int> compres;
  for(int i = 1; i <= n; i++) {
    compres.push_back(a[i]);
  }
  std::sort(compres.begin(), compres.end());
  for(int i = 1; i <= n; i++) {
    a[i] = lower_bound(compres.begin(), compres.end(), a[i]) - compres.begin() + 1;
  }
  std::vector<int> dp(n + 1, 0);
  std::vector<int> opt(n + 1, 1);
  for(int i = 1; i <= n; i++) {
    int prv = i;
    for(int j = i - 1; j >= 1; j--) {
      if(prv - j > d) {
        opt[i] = j + 1;
        break;
      }
      if(a[j] <= a[i]) {
        prv = j;
      }
    }
  }
  std::vector<std::pair<int, int>> ord;
  for(int i = 1; i <= n; i++) {
    ord.push_back({a[i], - i});
  }
  std::sort(ord.begin(), ord.end());
  for(int i = 0; i < n; i++) {
    dp[-ord[i].second] = 1;
    for(int j = opt[-ord[i].second]; j < -ord[i].second; j++) {
      dp[-ord[i].second] = std::max(dp[-ord[i].second], dp[j] + 1);
    }
  }
  std::cout << *max_element(dp.begin() + 1, dp.end());
}

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

  int t = 1;
  //std::cin >> t;
  while (t--) {
      solve();
  }

  return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 20 / 20
• Subtask 4: 0 / 12
• Subtask 5: 0 / 5
• Subtask 6: 0 / 35