fork(4) download
copy 
  1. #include <set>
  2. #include <map>
  3. #include <iostream>
  4.  
  5. struct Vector
  6. {
  7.     std::pair<int, int> xy;
  8.     Vector(int x_ = 0, int y_ = 0) : xy(std::make_pair(x_, y_)) {}
  9.     bool operator<(const Vector& rhs) const
  10.     {
  11.         return xy < rhs.xy;
  12.     }
  13. };
  14.  
  15. std::set<Vector> geometry;
  16.  
  17. int main()
  18. {
  19.     geometry.insert(Vector(1,2));
  20.     geometry.insert(Vector(1,5));
  21.     geometry.insert(Vector(1, 8));
  22.     geometry.insert(Vector(1, 8));
  23.     geometry.insert(Vector(1, 8));  // repeated
  24.     geometry.insert(Vector(1, 8));  // repeated
  25.     geometry.insert(Vector(2, 2));
  26.  
  27.     std::cout << geometry.size();
  28. }
Success #stdin #stdout 0s 3228KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
4
https://ideone.com/njmuVX
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!