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D. Fish Weight 题目连接: http://www.codeforces.com/contest/298/problem/D Description It is known that there are k fish species in the polar ocean, numbered from 1 to k. They are sorted by non-decreasing order of their weight, which is a positive number.…
C. Parity Game 题目连接: http://www.codeforces.com/contest/298/problem/C Description You are fishing with polar bears Alice and Bob. While waiting for the fish to bite, the polar bears get bored. They come up with a game. First Alice and Bob each writes…
B. Sail 题目连接: http://www.codeforces.com/contest/298/problem/B Description The polar bears are going fishing. They plan to sail from (sx, sy) to (ex, ey). However, the boat can only sail by wind. At each second, the wind blows in one of these directio…
A. Snow Footprints 题目连接: http://www.codeforces.com/contest/298/problem/A Description There is a straight snowy road, divided into n blocks. The blocks are numbered from 1 to n from left to right. If one moves from the i-th block to the (i + 1)-th blo…
A. Snow Footprints 如果只有L或者只有R,那么起点和终点都在边界上,否则在两者的边界. B. Sail 每次根据移动后的曼哈顿距离来判断是否移动. C. Parity Game 如果当前1的个数是偶数,则1的个数不会再增加:如果是奇数,则加1后不会再增加. 当前串可以组合成任意种组合,组合中的1不超过最大值. D. Fish Weight \(Diff = \sum{di\cdot wi}\) 假设\(w_1+=dw\),因为有\(0<w_1<=w_2<=\cdots&…
上一章有对个人作品站点进行一些优化.本章,轮到我们充实这个作品站点了,补充一些项目,从而展示我们的能力.换句话说,我们要构建一个相对复杂的企业网站主页. 下面有几个成功企业的网站: □ Zappos (http://www.zappos.com/) □ Amazon (https://www.amazon.com/) 尽管这些网站网站各有特色,但共同的一点就是它们都很复杂. 如果按照区域划分,可以将这些网站的主页分成三部分. □ 页头区:这一部分包含Logo.带下拉菜单的主导航.二级和实用链接导…
上一章有队个人站点站点进行一些优化.本章,轮到我们充实这个作品站点了,补充一些项目,从而展示我们的能力.话句话说,我们要构建一个相对复杂的企业网站主页. 下面有几个成功企业的网站: □ Zappos (http://www.zappos.com/) □ Amazon (https://www.amazon.com/) 尽管这些网站网站各有特色,但共同的一点就是它们都很复杂. 如果按照区域划分,可以将这些网站的主页分成三部分. □ 页头区:这一部分包含Logo.带下拉菜单的主导航.二级和实用链接导…
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