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  1. #include <iostream>
  2. #include<ext/pb_ds/assoc_container.hpp>
  3. #include<ext/pb_ds/tree_policy.hpp>
  4. using namespace std;
  5.  
  6. using namespace __gnu_pbds;
  7. template <class T>
  8. using indexed_multiset = tree<
  9.     T,
  10.     null_type,
  11.     less<T>,
  12.     rb_tree_tag,
  13.     tree_order_statistics_node_update
  14. >;
  15.  
  16.  
  17. int main() {
  18. 	indexed_multiset<int> ms;
  19.     vector<int> v{1, 1, 2, 2, 3, 4, 5, 6, 6};
  20.  
  21.     for(int i : v) ms.insert(i);
  22.  
  23. 	cout << "Ordered Multiset: ";
  24.     for(auto x : ms) cout << x << ' '; cout << '\n';
  25.  
  26.     cout << "Lower bound of 2: " << *ms.lower_bound(2) << '\n';
  27.     cout << "Upper bound of 2: " << *ms.upper_bound(2) << '\n';
  28.     return 0;
  29. }
Success #stdin #stdout 0.01s 5320KB
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stdin
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Standard input is empty
stdout
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Ordered Multiset: 1 2 3 4 5 6 
Lower bound of 2: 2
Upper bound of 2: 3
https://ideone.com/6g7JRW
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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