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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define ll long long int
  4. const int M = 1e9 + 7;
  5.  
  6. // Sep 1 Rippling OA Code
  7.  
  8.  
  9. int main()
  10. {
  11.     ios_base::sync_with_stdio(false);
  12.     cin.tie(NULL);
  13.     int n, k;
  14.     cin >> n >> k;
  15.     vector<int> v(n);
  16.     for (int i = 0; i < n; i++)
  17.         cin >> v[i];
  18.     map<int, vector<int>> mp;
  19.     for (int i = 0; i < n; i++)
  20.     {
  21.         mp[v[i]].push_back(i);
  22.     }
  23.     int ans=0;
  24.  
  25.     for (auto it : mp)
  26.     {
  27.         vector<int> arr = it.second;
  28.         int sz = arr.size();
  29.         int i = 0, j = 0;
  30.         int cnt = 0;
  31.         int rem = k;
  32.         int ma = 0;
  33.         while (j < sz)
  34.         {
  35.             if (j + 1 < sz)
  36.             {
  37.                 while (rem < arr[j + 1] - arr[j] - 1)
  38.                 {
  39.                     rem += arr[i + 1] - arr[i] - 1;
  40.                     cnt--;
  41.                     i++;
  42.                 }
  43.                 rem -= (arr[j + 1] - arr[j] - 1);
  44.             }
  45.  
  46.             cnt++;
  47.             ma=max(ma,cnt);
  48.             j++;
  49.         }
  50.         ans=max(ans,ma);
  51.     }
  52.     cout<<ans<<endl;
  53.     return 0;
  54. }
Success #stdin #stdout 0.01s 5328KB
comments (?)
stdin 
9 2
2 3 2 3 2 3 2 2 2
stdout 
5
https://ideone.com/x3Lrr6
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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