URAL.1033 Labyrinth (DFS) 题意分析 WA了好几发,其实是个简单地DFS.意外发现这个俄国OJ,然后发现ACRUSH把这个OJ刷穿了. 代码总览 #include <iostream> #include <cstdio> #include <algorithm> #include <cstring> #include <sstream> #include <set> #include <map> #…

E - Labyrinth Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice URAL 1033 Description Administration of the labyrinth has decided to start a new season with new wallpapers. For this purpose they need…

Labyrinth Time limit: 1.0 secondMemory limit: 64 MB Administration of the labyrinth has decided to start a new season with new wallpapers. For this purpose they need a program to calculate the surface area of the walls inside the labyrinth. This job…

1033 简单dfs 有一点小小的坑 就是图可能不连通 所以要从左上和右下都搜一下 加起来 从讨论里看到的 讨论里看到一句好无奈的回复 “可不可以用中文呀...” #include <iostream> #include<cstdio> #include<cstring> #include<algorithm> #include<stdlib.h> #include<vector> using namespace std; ][];…

URAL题解一 URAL 1002 题目描述:一种记住手机号的方法就是将字母与数字对应,如图.这样就可以只记住一些单词,而不用记住数字.给出一个数字串和n个单词,用最少的单词数来代替数字串,输出对应的任一方案. solution 首先想到的应该是DP,接着就是状态转移的问题,也就是预处理出每个单词可以与哪一段的数字对应,分析时间复杂度,发现直接暴力判断是可以的,但用HASH会好一些,还可以用KMP. 时间复杂度:\(O(单词数*数字长度)或O(单词长度*数字长度)\) URAL 1010 题目描…

Rope in the Labyrinth Time Limit:500MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice URAL 1145 Description A labyrinth with rectangular form and size m × n is divided into square cells with sides' length 1 by lines…

1145. Rope in the Labyrinth Time limit: 0.5 secondMemory limit: 64 MB A labyrinth with rectangular form and size m × n is divided into square cells with sides' length 1 by lines that are parallel with the labyrinth's sides. Each cell of the grid is e…

1152. False Mirrors Time limit: 2.0 secondMemory limit: 64 MB Background We wandered in the labyrinth for twenty minutes before finally entering the large hall. The walls were covered by mirrors here as well. Under the ceiling hung small balconies wh…

初探数位dp 介绍了数位类统计的基础知识.以下列出其中的基础点: 基本问题 统计在区间[l, r]中满足条件的数的个数 思路 1. [l, r] 将问题转换为 在[0, r]中满足条件的个数 - 在[0, l)满足条件的个数 2. 求解 区间[0, n]满足条件的个数 性质:一个小于n的数m,一定是从高位到低位在某一位小于n的对应位的一个数   数值 百位 十位 个位   n   m 3 5 0<8 m 349 3 4<5 遍历所有小于n的数:从高位到低位枚举第一次小于n的数位,之后数位的值就…

Labyrinth Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1507    Accepted Submission(s): 520 Problem Description 度度熊是一只喜欢探险的熊,一次偶然落进了一个m*n矩阵的迷宫,该迷宫只能从矩阵左上角第一个方格开始走,只有走到右上角的第一个格子才算走出迷宫,每一次只能走一格,…