Compilare: user.cpp: In function 'int main(int, char**)': user.cpp:188: warning: statement has no effect user.cpp:190: warning: statement has no effect user.cpp: In static member function 'static void Sort<T>::Helper::mergeSort(std::vector<T, std::allocator<_CharT> >&, typename std::vector<T, std::allocator<_CharT> >::difference_type, typename std::vector<T, std::allocator<_CharT> >::difference_type) [with T = long unsigned int]': user.cpp:40: instantiated from 'static void Sort<T>::Merge(std::vector<T, std::allocator<_CharT> >&) [with T = long unsigned int]' user.cpp:186: instantiated from here user.cpp:129: warning: comparison between signed and unsigned integer expressions user.cpp:129: warning: comparison between signed and unsigned integer expressions user.cpp:137: warning: comparison between signed and unsigned integer expressions user.cpp:140: warning: comparison between signed and unsigned integer expressions