Merge pull request showwin#14 from showwin/ubuntu_update_18.04

競技用インストールのOSをUbuntu 18.04に更新

Merge pull request #5 from showwin/add_golang

Add Go implementation

Merge pull request #4 from showwin/add_python

add Python implementation

Merge pull request #1 from Goryudyuma/fix-init.sql

fix init.sql