A - Alphabet
//待填B - Buggy Robot
//待填C - Cameras
//待填D - Contest Strategy
//待填E - Enclosure
//待填F - Illumination
//待填G - Maximum Islands
//待填H - Paint
//待填I - Postman
//待填J - Shopping
//待填K - Tournament Wins
//待填L - Windy Path
//待填