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Change language :Manasa 和 她的朋友出去徒步旅行。她发现一条小河里边顺序排列着带有数值的石头。她开始沿河而走，发现相邻两个石头上的数值增加 a 或者 b. 这条小河的尽头有一个宝藏，如果Manasa能够猜出来最后一颗石头上的数值，那么宝藏就是她的。假设第一个石头的上数值为0，... 阅读全文
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Little Bob loves chocolates, and goes to the store with $N money in his pocket. The price of each chocolate is $C. The store offers a discount: for ev... 阅读全文
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给定两个整数：L 和 R∀ L ≤ A ≤ B ≤ R, 找出 A xor B 的最大值。输入格式第一行包含 L 第一行包含 R数据范围1 ≤ L ≤ R ≤ 103输出格式输出最大的异或和题解： 1 import java.io.*; 2 import java.util.*; 3 import ... 阅读全文
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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