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洛谷 U140760 狭义公因子 洛谷传送门 题目背景 SeawaySeawa**y是热爱读书的好孩子。 有一天，SeawaySeawa**y正在读书。他看到了这样的一段描写—— 闰土又对我说： “现在太冷，你夏天到我们这里来。我们日里到海边捡贝壳去，红的绿的都有，鬼见怕也有，观音手也有。晚上我和爹 阅读全文
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CF75C Modified GCD 洛谷传送门 题目描述 Well, here is another math class task. In mathematics, GCD is the greatest common divisor, and it's an easy task to calc 阅读全文
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CF457C Elections 洛谷传送门 题目描述 You are running for a governor in a small city in Russia. You ran some polls and did some research, and for every person i 阅读全文
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CF1019A Elections 洛谷传送门 题目描述 As you know, majority of students and teachers of Summer Informatics School live in Berland for the most part of the year 阅读全文