摘要：Problem To celebrate the anniversary of Googleland, N couples are going to go for a boat ride in a rowboat. The rowboat is very long, but it is only o 阅读全文

摘要：Problem Thanh wants to paint a wonderful mural on a wall that is N sections long. Each section of the wall has a beauty score, which indicates how bea 阅读全文

摘要：Problem You are a contestant on a popular new game show and are playing for the grand prize! There are two big buttons, a red one and a black one. You 阅读全文