10798 - Be wary of Roses You've always been proud of your prize rose garden. However, some jealous fellow gardeners will stop at nothing to gain an edge over you. They have kidnapped, blindfolded, and handcuffed you, and dumped you right in the middl…

http://www.lydsy.com/JudgeOnline/problem.php?id=1054 一开始我还以为要双向广搜....但是很水的数据,不需要了. 直接bfs+hash判重即可. #include <cstdio> #include <cstring> #include <cmath> #include <string> #include <iostream> #include <algorithm> using n…

Description Let's play a card game called Gap. You have cards labeled with two-digit numbers. The first digit ( to ) represents the suit of the card, and the second digit ( to ) represents the value of the card. First, you shu2e the cards and lay the…

思路:宽度优先搜索(BFS算法) #include<iostream> #include<stdio.h> #include<cmath> #include<cstring> using namespace std; int a,b; struct node{ int num; int step; }; node que[10000];//默认初始化为0 int visit[10000];//默认初始化为0 int prime(int d){ if(d<…

Cleaning Robot (bfs+dfs) Here, we want to solve path planning for a mobile robot cleaning a rectangular room floor with furniture. Consider the room floor paved with square tiles whose size fits the cleaning robot (1 * 1). There are 'clean tiles' and…

最早在大学的时候,只知道用 MD5 来存用户的账号的密码,但其实这非常不安全,而所用到的哈希函数,深入挖掘,也发现并不简单-- 一.普通的 Hash 函数 哈希(散列)函数是什么就不赘述了. 1.不推荐 RC4, MD4, MD5, SHA-0, SHA-1, DES, 2DES 等 2.推荐 SHA-2(SHA-256, SHA-384, SHA-512).SHA-3.Blake2 等 美国国家标准和技术协会(NIST)宣布,2010 年后开始逐步取消 SHA-1 作为安全哈希算法的资格,取而…

UVA 题意:两个绿洲之间是沙漠,沙漠的温度不同,告诉起点,终点,求使得从起点到终点的最高温度最小的路径,如果有多条,输出长度最短的路径: 思路:用最小费用(最短路径)最大流(最小温度)也能搞吧,但因为题意是看着博客做的,不小心看到了他的思路,就自己实现了一遍,二分温度,假设当前温度为x,求保证最大温度为x的情况下的最短路:打印路径就是递归打印. #include <iostream> #include <cstdio> #include <cstdlib> #incl…

Ignatius and the Princess I Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Description The Princess has been abducted by the BEelzebub feng5166, our hero Ignatius has to rescue our pretty Princess. Now he g…

题目链接: http://acm.nyist.net/JudgeOnline/problem.php?pid=21 思想: 看了一下搜索就来写了这题(BFS 找出最短路径 所以用此来进行搜索) 这题在加上栈的操作就能找到最后的路径(就是总共需要倒几次水): 操作: 首先:将水杯初始化(A 0 0)进栈 当前倒水0次 然后进行搜索,取出栈顶,判断是否是目标结果,不是则把这个状态进行转移(就是进行这个状态进行在一次倒水操作,) 直到找到目标状态或是不能得到目标状态为止 这题感觉就是那个到倒水的时候处…

Description Bessie hears that an extraordinary meteor shower is coming; reports say that these meteors will crash into earth and destroy anything they hit. Anxious for her safety, she vows to find her way to a safe location (one that is never destroy…