#include <iostream>
#include <utility>
 
 
int
main()
{
  auto result = [](auto f) {
    return [=](auto g) {
      return [=](auto&&... args) {
        return f(g(g), std::forward<decltype(args)>(args)...);
      };
    }([=](auto g) {
      return [=](auto&&... args) {
        return f(g(g), std::forward<decltype(args)>(args)...);
      };
    });
  }([](auto f, int n) -> int {
    return n < 2 ? n : (f(n - 1) + f(n - 2));
  })(10);
  std::cout << result << std::endl;
}

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