Submission #807712

#	Time	Username	Problem	Language	Result	Execution time	Memory
807712		dong_liu	Stone Arranging 2 (JOI23_ho_t1)	C++17	100 / 100	74 ms	9044 KiB

Main

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

int main() {
  cin.tie(0)->sync_with_stdio(0);
  int n;
  cin >> n;
  vector<int> a(n), c;
  for (int i = 0; i < n; i++) cin >> a[i];
  c = a;
  sort(c.begin(), c.end());
  c.erase(unique(c.begin(), c.end()), c.end());
  for (int i = 0; i < n; i++)
    a[i] = lower_bound(c.begin(), c.end(), a[i]) - c.begin();
  vector<int> has(c.size());
  vector<array<int, 3>> segs;
  for (int i = 0; i < n; i++) {
    if (!has[a[i]])
      segs.push_back({i, i, a[i]});
    else {
      while (segs.back()[2] != a[i]) {
        has[segs.back()[2]] = 0;
        segs.pop_back();
      }
      segs.back()[1] = i;
    }
    has[a[i]] = 1;
  }
  for (auto [l, r, p] : segs)
    for (int i = l; i <= r; i++) a[i] = c[p];
  for (int i = 0; i < n; i++) cout << a[i] << "\n";
}

• Subtask 1: 25 / 25
• Subtask 2: 35 / 35
• Subtask 3: 40 / 40