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…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1973 Prime Path Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Problem Description The ministers of the cabinet were quite upset by the message from the Chief of Secu…

http://acm.hdu.edu.cn/showproblem.php?pid=1195 这道题虽然只是从四个数到四个数,但是状态很多,开始一直不知道怎么下手,关键就是如何划分这些状态,确保每一个状态都能遍历到. 得到四个数之后,分三种情况处理,每次改变一个数之后都要加入队列,最先输出的就是步数最少. #include <cstdio> #include <cstring> #include <queue> using namespace std; struct p…

题意:给出两个四位数,现要改变第一个数中的个,十,百,千位当中的一个数使它最终变成第二个数,要求这过程中形成的数是素数,问最少的步骤题解:素数筛选+bfsSample Input31033 81791373 80171033 1033Sample Output670 注意第一位不能变成0即可 #include<cstdio> #include<iostream> #include<algorithm> #include<cstring> #include&l…

Prime Path Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 987    Accepted Submission(s): 635 Problem Description The ministers of the cabinet were quite upset by the message from the Chief of S…

Prime Path Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 463    Accepted Submission(s): 305 Problem Description The ministers of the cabinet were quite upset by the message from the Chief of…

题目描述: http://poj.org/problem?id=3414 中文大意: 使用两个锅,盛取定量水. 两个锅的容量和目标水量由用户输入. 允许的操作有:灌满锅.倒光锅内的水.一个锅中的水倒入另一个锅. 在两个锅互相倒水的过程中,若一个锅被倒满,而原来的锅中还有水,则剩余在原来的锅中. 不断执行这三个过程,直到任意一个锅中,贮存了目标数量的水,过程结束. 思路: 队列节点记录的是当前两个锅的贮水量和之前的一系列操作. 在弹出队列首节点,获取了当前两个锅的水量信息后,后续怎么操作,有 6…

#include<stdio.h> #include<stdlib.h> #include<string.h> #include<queue> #include<math.h> #define N 10010 using namespace std; int vis[N]; ], s2[], s3[]; struct node { int step; ]; }; int prime(int y) { int i, k = (int)sqrt(y)…

转载:from http://blog.csdn.net/qq_28236309/article/details/47818349 基础题:1000.1001.1004.1005.1008.1012.1013.1014.1017.1019.1021.1028.1029. 1032.1037.1040.1048.1056.1058.1061.1070.1076.1089.1090.1091.1092.1093. 1094.1095.1096.1097.1098.1106.1108.1157.116…

Saving HDU Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 7194    Accepted Submission(s): 3345 Problem Description 话说上回讲到海东集团面临内外交困,公司的元老也只剩下XHD夫妇二人了.显然,作为多年拼搏的商人,XHD不会坐以待毙的.  一天,当他正在苦思冥想解困良策的…