摘要： H - 二分+交互 Gym - 101375H Obs: this is an interactive problem. More information is under the "Interaction" section. MaratonIME is gathering to start ano 阅读全文

摘要： I - 二分 HYSBZ - 1734 Farmer John has built a new long barn, with N (2 <= N <= 100,000) stalls. The stalls are located along a straight line at position 阅读全文

摘要： F - BFS/DFS POJ - 1426 给定一个正整数n，请编写一个程序来寻找n的一个非零的倍数m，这个m应当在十进制表示时每一位上只包含0或者1。你可以假定n不大于200且m不多于100位。 提示：本题采用Special Judge，你无需输出所有符合条件的m，你只需要输出任一符合条件的m即 阅读全文

摘要： L - 二分？？？ CodeForces - 1260B You are given two integers aa and bb. You may perform any number of operations on them (possibly zero). During each opera 阅读全文

摘要： A - 尺取 POJ - 3061 A sequence of N positive integers (10 < N < 100 000), each of them less than or equal 10000, and a positive integer S (S < 100 000 0 阅读全文

摘要： C - DFS/BFS POJ - 1979 There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black 阅读全文

摘要： B - DFS/BFS POJ - 2386 Due to recent rains, water has pooled in various places in Farmer John's field, which is represented by a rectangle of N x M (1 阅读全文

摘要： 题目：G - BFS Gym - 101755H You play a new RPG. The world map in it is represented by a grid of n × m cells. Any playing character staying in some cell c 阅读全文

摘要： 恢复内容开始 我们常听过广搜，深搜。那么他们到底是什么呢？ 深搜就是深度优先的搜索方式，简称dfs。广搜就是宽度优先的搜索方式，简称bfs。 *1.下面让我们先来看一下深度搜索，也就是dfs。 先给出最初的定义： 一dfs遍历二叉树： 从根开始一直向下搜索，就像树根一直向下生长一样。直到搜到最底，就 阅读全文

摘要： 不说废话，先上图 。 实现这个目标，可以把数字想像成一条蛇，蛇爬过的数字就加一。把二维数组[y][x]作为地图，y为纵轴，x为横轴。通过改变蛇的坐标让它爬起来(是不是很像贪吃蛇)。！！先上总代码： 这些都挺简单的对吧，关键是怎么让蛇在我们希望时调头。在这我想先说说我发现的一些规律： (9^2-1)/ 阅读全文