Submission #968533

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
968533	2024-04-23 14:50:47	penguin133	Index (COCI21_index)	C++17	110 / 110	687 ms	47360 KiB

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// CPP program for querying in
// wavelet tree Data Structure
#include <bits/stdc++.h>
using namespace std;
#define N 200005
 
// Given Array
int a[N];
 
// wavelet tree class
struct wavelet_tree{
  int lo, hi;
  wavelet_tree *l, *r;
  vector<int>b;
  
  wavelet_tree(int *from, int *to, int x, int y){
    lo = x, hi = y;
    if(lo == hi || from >= to)return;
    int mid = (lo + hi)/2;
    auto f = [mid](int x){
      return x <= mid;
    };
    b.reserve(to-from+1);
    b.push_back(0);
    for(auto it = from;it != to;it++){
      b.push_back(b.back() + f(*it));
    }
    
    auto pivot = stable_partition(from, to, f);
 
 
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• Subtask 1: 20 / 20
• Subtask 2: 40 / 40
• Subtask 3: 50 / 50