Problem Description There are tons of problems about integer multiples. Despite the fact that the topic is not original, the content is highly challenging. That’s why we call it “Yet Another Multiple Problem”.In this problem, you’re asked to solve th…

题目大意:滚骰子游戏,骰子的上面的点数跟方格中的数相同时或格子中的数是-1时能把格子滚过去,找一条从起点滚到起点的路径. 题目大意:简单BFS,状态转移时细心一些即可. 代码如下; # include<iostream> # include<cstdio> # include<map> # include<string> # include<queue> # include<cstring> # include<algorith…

C. NP-Hard Problem time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Recently, Pari and Arya did some research about NP-Hard problems and they found the minimum vertex cover problem very int…

Given two words (beginWord and endWord), and a dictionary's word list, find the length of shortest transformation sequence from beginWord to endWord, such that: Only one letter can be changed at a time. Each transformed word must exist in the word li…

$des$ 小G有一个长度为 $n$ 的 01 串 T ,其中只有 $T_S = 1$,其余位置都是 $0$.现在小G可以进行若干次以下操作:选择一个长度为 $K$ 的连续子串(K是给定的常数),翻转这个子串.对于每个 $i,i ∈ [1,n]$,小G想知道最少要进行多少次操作使得 $T_i = 1$. 特别的,有 $m$ 个 “禁止位置”,你需要保证在操作过程中 $1$ 始终不在任何一个禁止位置上. $sol$ 考虑当前在每个点时可以通过一次翻转转移到哪些点,直接遂遆道即可算出每个点的所需步数…

https://loj.ac/problem/6121 BFS + 状压 写过就好想,注意细节debug #include <bits/stdc++.h> #define read read() #define up(i,l,r) for(register int i = (l);i <= (r);i++) #define down(i,l,r) for(register int i = (l);i >= (r);i--) #define traversal_vedge(i) fo…

Given a string S, we can transform every letter individually to be lowercase or uppercase to create another string.  Return a list of all possible strings we could create. Examples: Input: S = "a1b2" Output: ["a1b2", "a1B2",…

Pots 直接上中文 Descriptions: 给你两个容器,分别能装下A升水和B升水,并且可以进行以下操作 FILL(i)        将第i个容器从水龙头里装满(1 ≤ i ≤ 2); DROP(i)        将第i个容器抽干 POUR(i,j)      将第i个容器里的水倒入第j个容器(这次操作结束后产生两种结果,一是第j个容器倒满并且第i个容器依旧有剩余,二是第i个容器里的水全部倒入j中,第i个容器为空) 现在要求你写一个程序,来找出能使其中任何一个容器里的水恰好有C升,找出…

http://acm.hust.edu.cn/vjudge/contest/view.action?cid=103711#problem/M /*BFS简单题 链接地址: http://acm.hdu.edu.cn/showproblem.php?pid=1495 思路:预处理m < n < s,以后处理方便点 初始状态,m,n杯中可乐体积为0,s杯中体积为s; 然后分六种情况: 1, s 倒 m 2, s 倒 n 3, m 倒 n 4, m 倒 s 5, n 倒 m 6, n 倒 s 直到n…

Problem Link: http://oj.leetcode.com/problems/word-ladder/ Two typical techniques are inspected in this problem: Hash Table. One hash set is the words dictionary where we can check if a word is in the dictionary in O(1) time. The other hash set is us…