Create lone_sum.py
Create lone_sum.py
dvt32/cpp-journey,dvt32/cpp-journey,dvt32/cpp-journey,dvt32/cpp-journey,dvt32/cpp-journey,dvt32/cpp-journey,dvt32/cpp-journey,dvt32/cpp-journey,dvt32/cpp-journey,dvt32/cpp-journey,dvt32/cpp-journey,dvt32/cpp-journey