#include <iostream>
#include <algorithm>
 
 
using namespace std;
 
 
template<typename>
struct VectorIterator {};
 
template<typename T>
struct Array {
 
   typedef VectorIterator<T> iterator;
 
   iterator begin() const {
      return {};
   }
   iterator end() const {
      return {};
   }
};
 
 
template<typename T>
void sort(VectorIterator<T>, VectorIterator<T>) {
   cout << "my sort" << endl;
}
 
 
int main() {
   Array<int> array;
   sort(array.begin(), array.end());
}
 

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