摘要：
1090. HighwaysConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionThe island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has no public highways. So the traffic is difficult in Flatopia. The Flatopian government is aware of this problem. They're planning to build some h 阅读全文
摘要：
1036. Crypto ColumnsConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionThe columnar encryption scheme scrambles the letters in a message (or plaintext) using a keyword as illustrated in the following example: Suppose BATBOY is the keyword and our message is MEET ME BY THE OLD OAK TREE. Sin 阅读全文