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  1. //⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⣀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  2. //⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣠⣾⢿⡏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  3. //⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣾⣛⣫⣿⡿⣧⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  4. //⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣤⣴⡶⠞⠛⠛⠛⠛⠛⠛⠓⠶⣶⣤⣀⣼⣿⣿⣿⣷⣽⣧⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  5. //⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣸⡟⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⡇⢩⡿⢹⡿⠿⠋⠀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  6. //⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⡇⠀⠀⢠⣤⣤⣶⣶⣶⣶⣶⣶⣶⣶⣾⣧⣼⢣⣿⣀⣴⡾⠟⠛⠿⢶⣦⣄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  7. //⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠸⣿⣤⡀⠈⠀⠙⠻⢶⣤⣄⣀⣀⠀⢠⣶⣿⡟⣼⡟⠛⠛⠛⠷⣦⣄⡀⠀⠉⠛⠿⣦⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  8. //⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠙⠛⢷⣦⣤⣤⣤⣬⣭⣽⣟⣛⣛⣿⡟⣿⣾⣿⣀⠀⠀⠀⠈⠙⠻⢦⣄⡀⠀⠈⠙⢷⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  9. //⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣤⡶⠞⠛⠋⠉⠉⠉⠀⠀⠉⠉⠉⠙⣿⣶⠿⠻⠿⢿⣿⣶⣶⣤⣤⣤⣤⣽⣿⣦⡀⠀⠀⠙⣷⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀
  10. //⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣴⡿⠋⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠁⠀⠀⠀⠀⠀⠉⠉⠛⠷⣦⣌⡉⠁⠈⠻⠀⠀⠀⠈⣷⠀⠀⠀⠀⠀⠀⠀⠀⠀
  11. //⠀⠀⢀⡀⠀⠀⠀⠀⠀⠀⠀⣀⣠⡾⠟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢿⣷⡶⠶⢶⡶⠶⠾⠏⠀⠀⠀⠀⠀⠀⠀⠀⠀
  12. //⠀⠀⢻⡛⠛⠿⠿⠿⠿⠛⠛⠛⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠻⣦⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  13. //⠀⠀⠸⣷⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣤⣶⣾⣶⣶⡶⠶⢶⣿⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢿⣤⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  14. //⠀⠀⠀⠻⣷⣄⠀⠀⠀⠀⠀⠀⢀⣴⡿⣋⣭⣷⠶⠶⠶⢶⣤⣸⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣴⠟⠋⠀⠀⠀⠀⠀⠀⠀⡀⠀⠀⠀⠹⣷⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  15. //⠀⠀⠀⠀⠈⢙⣿⠆⠀⠀⠀⢰⣿⢯⣾⣿⣧⣄⠀⠀⠀⠀⠈⠻⣧⡀⠀⠀⠀⠀⠀⠀⠀⣠⣾⢿⣿⠀⠀⠀⠀⠀⠀⠀⠀⢀⣿⡀⠀⠀⠀⠘⣷⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀
  16. //⠀⠀⠀⠀⣰⡿⠃⠀⠀⠀⣴⡟⢁⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠸⣷⠀⠀⠀⠀⠀⢀⣴⠟⠁⠈⣿⣀⣀⠀⠀⠀⠀⠀⢀⣼⣿⣷⣀⠀⠀⠀⠘⣷⡄⠀⠀⠀⠀⠀⠀⠀⠀
  17. //⠀⠀⠀⣴⡟⠀⠀⠀⢠⣾⠋⠀⢸⣿⣿⣿⣿⡿⠃⠀⠀⠀⠀⠀⠀⢹⡆⠀⠀⠀⣠⡿⠁⣠⣶⠿⠛⠛⠛⠛⠷⣦⡀⣠⣿⣿⠅⢙⣿⣦⣤⣀⡀⠹⣷⣄⠀⠀⠀⠀⠀⠀⠀
  18. //⠀⠀⣸⡟⠀⠀⠀⢠⡿⠃⠀⠀⠘⣷⡈⠉⠉⠀⠀⠀⠀⠀⠀⠀⢠⣿⡆⠀⠀⢰⡿⠁⣼⣯⣥⣤⣄⠀⠀⠀⠀⠈⢿⣿⣿⣅⡀⠀⢀⣿⡿⠛⠁⠀⠀⠙⢷⣦⣀⠀⠀⠀⠀
  19. //⠀⢠⡿⠀⠀⢀⣠⡾⠁⠀⠀⠀⠀⠘⢿⣦⡀⠀⠀⠀⠀⠀⣀⣴⠟⠉⣿⡄⠀⣿⠀⢸⣿⣿⣿⣿⣿⡧⠀⠀⠀⠀⠘⣿⠉⠻⣿⣿⣿⡟⠀⠀⠀⠀⠀⠀⠀⠊⢻⣷⠀⠀⠀
  20. //⠀⣿⠇⠀⠀⠏⣀⡀⠀⠀⠀⠀⠀⠀⠀⠈⠛⠷⠶⠶⠶⠟⠋⠁⠀⠀⠈⠻⣶⣏⠀⢸⡟⢿⣿⡿⠟⠁⠀⠀⠀⠀⠀⣿⣆⠀⠈⢿⡟⠀⠀⠀⠀⠀⢠⣀⣠⣶⠟⠁⠀⠀⠀
  21. //⢀⣿⠀⠀⠀⢰⡟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢾⣆⠀⠀⠀⠀⠀⠀⠈⠛⠂⠘⢿⣄⠀⠀⠀⠀⠀⠀⠀⠀⣼⡟⣿⡆⠀⠘⠃⠀⠀⢠⡄⠀⠘⣿⡉⠀⠀⠀⠀⠀⠀
  22. //⠸⣿⠀⠀⠀⢸⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣼⣿⣷⣶⣶⣾⣷⣄⣀⠀⣀⣤⠈⠛⢷⣤⣄⣀⣀⣠⣴⠾⢿⣄⣹⡇⠀⠀⠀⠀⠀⠸⣿⠀⠀⠙⢷⣤⡀⠀⠀⠀⠀
  23. //⠀⣿⡀⠀⠀⠘⣷⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⣿⠟⠛⠋⠉⠉⠉⠉⠙⠛⠻⣿⠉⠀⠀⠀⠈⠉⠉⠉⠉⠁⠀⠈⠻⣿⡧⠀⠀⠀⠀⠀⠀⣿⠀⠀⠀⠀⠉⠛⠷⣶⣤⡀
  24. //⠀⠹⣷⡀⢀⡀⠙⢷⣄⠀⠀⠀⠀⠀⠀⠀⠀⣰⡿⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢼⡟⠀⠀⠀⠀⠀⠀⠀⢹⠀⠀⠀⠀⠀⠀⠀⣠⡾⠁
  25. //⠀⠀⠙⢷⣿⣷⡀⠀⠙⢿⣦⣄⡀⠀⠀⠀⠀⣿⣁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⠇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⡿⠇⠀⠀⠀⠀⠀⠀⢸⡀⠀⠀⠀⠀⠀⣾⠛⠀⠀
  26. //⠀⠀⠀⠀⠙⠛⠿⣦⣄⣸⣧⣿⣿⣷⣤⣄⡀⠀⠈⠛⠦⢤⣀⡀⠀⠀⠀⠀⠀⣰⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⡟⠀⠀⠀⠀⠀⠀⠀⠀⢸⠀⣀⠀⠀⠀⠀⣿⠀⠀⠀
  27. //⠀⠀⠀⠀⠀⠀⠀⠈⠙⠛⠿⢿⣿⣯⣋⢻⣿⢷⣶⣤⣄⣀⠈⠉⠙⠒⠒⠒⠺⠟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣾⢏⡄⠀⠀⠀⠀⠀⠀⠀⠀⣿⢀⣿⣦⡀⠀⢠⣿⠀⠀⠀
  28. //⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⡾⣿⠟⠛⠿⢷⣶⣿⣿⡟⣿⣿⣷⣶⣦⣤⣤⣤⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣾⣯⡿⠃⠀⠀⠀⠀⠀⠀⠀⢸⣿⣾⡟⣿⡇⢀⣼⠇⠀⠀⠀
  29. //⠀⠀⠀⠀⠀⠀⠀⠀⢀⣾⠏⢰⡟⢺⣶⣾⠿⠿⢛⢽⣵⣿⢿⣿⠀⢩⣿⣿⣿⣿⣿⠿⢷⣶⣶⣶⣶⣶⣶⣿⠟⠋⠀⠀⠀⠀⠀⠀⠀⠀⢠⣿⣿⣿⣾⣿⣷⠿⠃⠀⠀⠀⠀
  30. //⠀⠀⠀⠀⢀⣀⡀⣠⡿⠁⠀⣿⠁⠈⠻⢿⣿⣧⣾⠿⠟⣁⣾⡏⠀⢈⣿⡇⠉⠛⠿⣿⡿⠿⠿⠻⣿⣟⠉⠀⠀⠀⠀⠀⣀⡀⠀⠀⠀⣰⡿⠿⠛⣋⣀⣽⣵⣾⣿⣿⡇⠀⠀
  31. //⠀⠀⠀⠀⣿⠙⢿⣿⣤⣤⣼⡏⠀⠀⠀⠀⠀⠀⢀⠀⣼⣿⣿⠀⢠⣿⣟⠻⣾⣛⣛⠻⢿⣷⣤⣄⣀⡙⠻⠷⠶⠶⠿⣻⡟⠁⠀⣠⣾⣿⣿⣿⣿⣿⣟⣋⣡⣠⣄⣿⡇⠀⠀
  32.  
  33. #include <bits/stdc++.h>
  34. #define ll long long
  35. #define ull unsigned long long
  36. #define fi first
  37. #define se second
  38. #define pb push_back
  39. #define endl '\n'
  40. #define taskname "temp"
  41. using namespace std;
  42.  
  43. const ll INF = 1e18;
  44. const ll MOD = 1e9 + 7;
  45.  
  46. void solve() {
  47.     ll n;
  48.     cin >> n;
  49.     vector<ll> arr(n);
  50.     for (ll &x : arr) cin >> x;
  51.     vector<ll>dp(n + 1, 0);
  52.     unordered_map<ll, vector<ll>>pos;
  53.     for (ll i = 1; i <= n; i++) {
  54.         dp[i] = dp[i - 1];
  55.         ll val = arr[i - 1];
  56.         pos[val].pb(i);
  57.         if ((ll)pos[val].size() >= val) {
  58.             ll first = pos[val][pos[val].size() - val];
  59.             dp[i] = max(dp[i], dp[first - 1] + val);
  60.         }
  61.     }
  62.     cout << dp[n] << endl;
  63. }
  64.  
  65. int main(){
  66.     ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
  67.     //freopen(taskname".INP", "r", stdin);
  68.     //freopen(taskname".OUT", "w", stdout);
  69.     ll testcase = 1;
  70.     cin >> testcase;
  71.     for (ll test = 1; test <= testcase; ++test){
  72.         solve();
  73.     }
  74.     return 0;
  75. }
  76.  
  77. /*
  78.     roi em se gap mot chang trai khac
  79.     nam tay va buoc di bau troi xanh khac
  80.  
  81.         /\\              /\\          //\
  82.        (TwT)            (-.-)        (-.-)
  83.        /= =\            /> \> <3    </  <\
  84. */
  85.  
Success #stdin #stdout 0s 5316KB
comments (?)
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1 2 3 3 3 1
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2 3 3 1 2 3 5 1 1 7
stdout
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https://ideone.com/UunZ4U
language:
C++14 (gcc 8.3)
created:
6 days ago
visibility:
public

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