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King Robert has 7 kingdoms under his rule. He gets to know from a raven that the Dothraki are going to wage a war against him soon. But, he knows the ... 阅读全文
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Change language :Alex is attending a Halloween party with his girlfriend Silvia. At the party, Silvia spots a giant chocolate bar. If the chocolate ca... 阅读全文
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James找到了他的朋友Harry要给女朋友的情书。James很爱恶作剧，所以他决定要胡搞一下。他把信中的每个单字都变成了回文。对任何给定的字符串，他可以减少其中任何一个字符的值，例如'd'可以变成'c'，这算是一次操作。(另外，他最多只能将字符的值减少至'a'，'a'不能再被减少成'z')。找出将... 阅读全文
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Gem StonesJohn has discovered various rocks. Each rock is composed of various elements, and each element is represented by a lowercase latin letter fr... 阅读全文
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Calvin is driving his favorite vehicle on the 101 freeway. He notices that the check engine light of his vehicle is on, and he wants to service it imm... 阅读全文