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  8.  
  9. #include <iostream>
  10. #include <algorithm>
  11. using namespace std;
  12. bool Valid(long long n , long long c ,long long  places[] ,long long md){
  13.     sort (places , places+ n);
  14.     long long last = places[0] , cows = 1;
  15.     for (int i = 1 ; i < n ; i ++){
  16.         if (places[i] - last >= md){
  17.             last = places [i];
  18.             cows ++;
  19.         }
  20.     }
  21.     return cows >= c;
  22.  
  23. }
  24. long long BS(long long n , long long c , long long places[]){
  25.     long long st = 1 , ed = 1e9+5 , md ,ans;
  26.     while (st <= ed){
  27.         md = (st + ed)/2;
  28.         cout << md << "\n";
  29.         if (Valid(n , c , places , md)){
  30.             st = md +1;
  31.             ans = md;
  32.         }
  33.         else {
  34.             ed = md -1;
  35.         }
  36.     }
  37.     return ans;
  38. }
  39. int main()
  40. {
  41.     int t;
  42.     cin >> t;
  43.     while (t--){
  44.         long long n , c , places[100005];
  45.         cin >> n >> c;
  46.         for (int i = 0 ; i < n ; i ++){
  47.             cin >> places [i];
  48.         }
  49.         cout << BS(n , c , places);
  50.     }
  51.  
  52.     return 0;
  53. }
Success #stdin #stdout 0s 5320KB
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https://ideone.com/Qu9Jcu
language:
C++14 (gcc 8.3)
created:
2 hours ago
visibility:
public

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