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摘要： List Sorting Excel can sort records according to any column. Now you are supposed to imitate this function. Input Specification: Each input file conta 阅读全文

摘要： Colors in Mars People in Mars represent the colors in their computers in a similar way as the Earth people. That is, a color is represented by a 6-dig 阅读全文

摘要： Deepest Root A graph which is connected and acyclic can be considered a tree. The hight of the tree depends on the selected root. Now you are supposed 阅读全文

摘要： Palindromic Number A number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For example, 1234321 is a 阅读全文

摘要： Have Fun with Numbers Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it 阅读全文

摘要： Digital Library A Digital Library contains millions of books, stored according to their titles, authors, key words of their abstracts, publishers, and 阅读全文

摘要： Tree Traversals Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you ar 阅读全文

摘要： General Palindromic Number A number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For example, 1234 阅读全文

摘要： Public Bike Management There is a public bike service in Hangzhou City which provides great convenience to the tourists from all over the world. One m 阅读全文

摘要： Phone Bills A long-distance telephone company charges its customers by the following rules: Making a long-distance call costs a certain amount per min 阅读全文