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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. #define nl '\n'
  5. #define ll long long int
  6. #define pb push_back
  7. #define vi vector<int>
  8. #define fast ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
  9. #define sort_second sort(v.begin(), v.end(), [](const pair<int, int>& a, const pair<int, int>& b){return a.second <= b.second;})
  10.  
  11. ///////////////////////FUNCTIONS////////////////
  12. void solve()
  13. {
  14.     int n; cin >> n;
  15.     vector<int> v(n);
  16.     for(int i = 0;i < n;i++) cin >> v[i];
  17.     int moves = 0, target = v[n-1], window = 1, start = n-2;
  18.     while(start > -1)
  19.     {   
  20.         int end = max(-1, start - window);
  21.         // cout << start << " " << end << nl;
  22.         int cnt = 0;
  23.         for(int i = start;i > end;i--)
  24.         {
  25.             if(v[i] != target) cnt += 1;
  26.         }
  27.         if(cnt > 0) moves += 1;
  28.         window *= 2;
  29.         start = end;
  30.     }
  31.     cout << moves << nl;
  32. }
  33. ///////////////////MAIN FUNCTIOn///////////////////////////
  34.  
  35. int main()
  36. {   
  37.     fast
  38.     int T;
  39.     cin >> T;
  40.  
  41.     while(T--)
  42.     {
  43.         solve();
  44.     }
  45.  
  46.     return 0;
  47. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/0kUnJv
language:
C++14 (gcc 8.3)
created:
7 days ago
visibility:
public

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