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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define pb push_back
  4. #define MOD 1000000007
  5. #define PI 4 * atan(1)
  6. #define sz(A) (int)A.size()
  7. typedef long long ll;
  8. typedef vector<int> vi;
  9. typedef pair<int, int> pii;
  10. typedef vector<long long> vll;
  11. typedef long int int32;
  12. typedef unsigned long int uint32;
  13. typedef long long int int64;
  14. typedef unsigned long long int uint64;
  15.  
  16. struct node{
  17.     int val;
  18.     node *l, *r;
  19. };
  20. node *newnode(int d){
  21.     node* n = new node();
  22.     n->val = d;
  23.     n->l = n->r = NULL;
  24.     return n;
  25. }
  26. void insert(node* &root, int d){
  27.     if(root == NULL){
  28.         root = newnode(d);
  29.         return;
  30.     }
  31.     if(root->val > d) insert(root->l, d);
  32.     else insert(root->r, d);
  33. }
  34. int depth(node *root){
  35.     if(root == NULL) return 0;
  36.     return max(depth(root->l) + 1, depth(root->r) + 1);
  37. }
  38. inline void solve(int test){
  39.     int n,x; cin >> n;
  40.     node *root = NULL;
  41.     for(int i=0; i<n; i++){
  42.         cin >> x;
  43.         insert(root, x);
  44.     }
  45.     cout << depth(root) - 1 << "\n";
  46.  
  47. }   
  48. int main(){
  49.     ios_base::sync_with_stdio(false);
  50.     cin.tie(NULL);
  51.     cout.tie(NULL);
  52.     int typetest = 1;
  53.     if (typetest){
  54.         int t;
  55.         cin >> t;
  56.         cin.ignore();
  57.         for(int i=1; i<=t; i++){
  58.             solve(i);
  59.         }
  60.     }
  61.     else solve(0);
  62. }
Success #stdin #stdout 0.01s 5320KB
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https://ideone.com/4z7t1v
language:
C++14 (gcc 8.3)
created:
6 days ago
visibility:
public

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