模拟赛考到了这个题,但我傻傻的用了\(DFS\),于是爆了零 后来才想明白,因为搜索树的分支很多,但答案的深度却又没有那么深,所以在这里\(BFS\),而\(DFS\)一路搜到底的做法则会稳稳地\(T\)飞掉 其他细节请看代码注释 \(code:\) #include<bits/stdc++.h> #define maxn 10010 using namespace std; template<typename T> inline void read(T &x) { x=0…

题目: The ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change the four-digit room numbers on their offices.— It is a matter of security to change such things every now and then,…

POJ 3126 Prime Path(素数路径) Time Limit: 1000MS    Memory Limit: 65536K Description - 题目描述 The ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change the four-digit room numbers on…

题目链接:http://poj.org/problem?id=3126 Prime Path Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 22936   Accepted: 12706 Description The ministers of the cabinet were quite upset by the message from the Chief of Security stating that they…

题目链接:Prime Path 题目大意 从一个四位素数m开始,每次只允许变动一位数字使其变成另一个四位素数.求最终把m变成n所需的最少次数. 思路 BFS.搜索的时候,最低位为0,2,4,6,8可以先排除(偶数不会是素数),最高位是0的也可以排除.这个题判断素数的次数比较少,可以不打素数表. 题解 第二次写的时候代码写的很乱..没有第一遍干净了 #include <iostream> #include <cstring> #include <queue> using…

转载请注明出处:https://blog.csdn.net/Mercury_Lc/article/details/82697622     作者:Mercury_Lc 题目链接 题意:就是给你一个n,让你每次可以改变n的位数上的一个数,每次操作完必须是素数,要求最小次数的改变到达m. 题解:对n每一位都进行判断,找到通过最小操作次数得到m.分别要从个位.十位.百位.千位判断,在个位的时候每次只能是1.3.5.7.9,其他的改变之后都不是素数,十位.百位.千位都从0开始遍历到9,每次只要符合是素数…

题目传送门  Prime Path The ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change the four-digit room numbers on their offices. — It is a matter of security to change such things ever…

  POJ 3126  Prime Path Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 16204   Accepted: 9153 Description The ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change…

Prime Path Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 14091 Accepted: 7959 Description The ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change the four-digit r…

题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=1973 Prime Path Description The ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change the four-digit room numbers on their offices…