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  1. // وَمَا تَوْفِيقِي إِلَّا بِاللَّهِ عَلَيْهِ تَوَكَّلْتُ وَإِلَيْهِ أُنِيبُ
  2.  
  3. #include <bits/stdc++.h>
  4. #define T int t;cin>>t;while(t--)
  5. #define fast ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr)
  6. #define ll long long
  7. #define endl '\n'
  8. #define int ll
  9. using namespace std;
  10.  
  11. void Abady() {
  12.     T {
  13.         int n, d, x;
  14.         cin >> n >> d >> x;
  15.         int arr[n];
  16.         for (int i = 0; i < n; i++) {
  17.             cin >> arr[i];
  18.         }
  19.         sort(arr, arr + n);
  20.         reverse(arr, arr + n);
  21.         int l = 1, r = 1e18, ans = (-1);
  22.         while (l <= r) {
  23.             int mid = (l + r) / 2;
  24.             int k = 0;
  25.             bool j = 0;
  26.             multiset<double> st;
  27.             for (int i=0;i<n;i++) {
  28.                 double e = (double)arr[i]/(double)mid;
  29.                 if (e>x) {
  30.                     j=1;
  31.                     break;
  32.                 }
  33.                 if (st.size()) {
  34.                     auto m = st.lower_bound(e);
  35.                     if (m != st.end()) {
  36.                         st.erase(m);
  37.                         continue;
  38.                     }
  39.                 }
  40.                 if (e<x) {
  41.                     st.insert((double)x-(double)e);
  42.                 }
  43.                 k++;
  44.             }
  45.             if (j || (k>d)) l = mid + 1;
  46.             else {
  47.                 ans = mid;
  48.                 r = mid - 1;
  49.             }
  50.         }
  51.         cout << ans << endl;
  52.     }
  53. }
  54.  
  55. signed main() {
  56.     fast;
  57.     Abady();
  58. }
  59.  
Success #stdin #stdout 0s 5320KB
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https://ideone.com/KwNj1Q
language:
C++ (gcc 8.3)
created:
7 days ago
visibility:
public

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