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#include <Windows.h>
#include <new>

class HeapAllocator {
  static HANDLE Hh;
  static bool Initinit;
 
public:
  static void *alloc(std::size_t size) noexcept(false) {
    if (!Initinit) {
      Hh = ::HeapCreate(0, 0, 0); // Private, expandable heap
      Initinit = true;
    }
 
    if (Hh) {
      return ::HeapAlloc(Hh, 0, size);
    }
    throw std::bad_alloc();
  }
 
  static void dealloc(void *ptr) noexcept {
    if (Hh) {
      (void)::HeapFree(Hh, 0, ptr);
    }
  }
};
 
HANDLE HeapAllocator::Hh = nullptr;
bool HeapAllocator::Initinit = false;

void *operator new(std::size_t size) noexcept(false) {
  return HeapAllocator::alloc(size);
}
 
void operator delete(void *ptr) noexcept {
  return HeapAllocator::dealloc(ptr);
}