2_4
Merge branch 'master' of https://github.com/marozau/cpp_craft_0314
error correction 2_4
Merge branch 'master' of https://github.com/marozau/cpp_craft_0314
edit 2-4
add 4_4
added only puzzle 5
add 2_6
Update small_buffer.cpp
Update CMakeLists.txt
Update CMakeLists.txt
Update solution.h
add 4_5
Update solution.h
Update solution.cpp
Update small_buffer.cpp
Update solution.cpp
Update solution.h
Update market_message.h
Update market_message.cpp