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Digital collectible card games have become very popular recently. So Vova decided to try one of these. Vova has n cards in his collection. Each of the 阅读全文
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After several latest reforms many tourists are planning to visit Berland, and Berland people understood that it's an opportunity to earn money and cha 阅读全文
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Vasya has an array a consisting of positive integer numbers. Vasya wants to divide this array into two non-empty consecutive parts (the prefix and the 阅读全文
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Problem A Lucky Year 题目传送门[here] 题目大意是说，只有一个数字非零的数是幸运的，给出一个数，求下一个幸运的数是多少。 这个幸运的数不是最高位的数字都是零，于是只跟最高位有关，只保留最高位，然后加一求差就是答案。 Code 1 /** 2 * Codeforces 3 * 阅读全文