UVA524-Prime Ring Problem(搜索剪枝)

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UVA524-Prime Ring Problem(搜索剪枝)

Problem UVA524-Prime Ring Problem Accept:6782 Submit:43814 Time Limit: 3000 mSec Problem Description A ring is composed of n (even number) circles as shown in diagram. Put natural numbers 1,2,...,n into each circle separately, and the sum of number…

HDU1016 Prime Ring Problem (回溯 + 剪枝)

本文链接:http://www.cnblogs.com/Ash-ly/p/5398684.html 题意: 给你一个数字N(N <= 20),要求你把这N个数组成一个环,环内的数字不能重复,左右相邻的两个的和是素数.给出最后的答案. 思路: 利用回溯剪枝算法,N个数,每个数有N种状态,枚举这N个状态,枚举过程中剪枝优化. 代码: #include <cstdio> #include <iostream> #include <cstring> #include &l…

UVA524 素数环 Prime Ring Problem

题目OJ地址: https://www.luogu.org/problemnew/show/UVA524 hdu oj 1016: https://vjudge.net/problem/HDU-1016 zoj 1457 :https://vjudge.net/problem/ZOJ-1457 题意翻译输入正整数n,把整数1,2,...,n组成一个环,使得相邻两个整数之和均为素数.输出时,从整数1开始逆时针排列.同一个环恰好输出一次.. 多组数据,读入到EOF结束. 第i组数据输出前加上一…

hdu 1016 Prime Ring Problem（深度优先搜索）

Prime Ring Problem Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 12105 Accepted Submission(s): 5497 Problem Description A ring is compose of n circles as shown in diagram. Put natural numb…

ZOJ 1457 Prime Ring Problem（dfs+剪枝）

Prime Ring Problem Time Limit: 10 Seconds Memory Limit: 32768 KB A ring is compose of n circles as shown in diagram. Put natural number 1, 2, ..., n into each circle separately, and the sum of numbers in two adjacent circles should be a prime…

HDUOJ----(1016)Prime Ring Problem

Prime Ring Problem Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 21151 Accepted Submission(s): 9465 Problem Description A ring is compose of n circles as shown in diagram. Put natural numb…

HDOJ(HDU).1016 Prime Ring Problem (DFS)

HDOJ(HDU).1016 Prime Ring Problem (DFS) [从零开始DFS(3)] 从零开始DFS HDOJ.1342 Lotto [从零开始DFS(0)] - DFS思想与框架/双重DFS HDOJ.1010 Tempter of the Bone [从零开始DFS(1)] -DFS四向搜索/奇偶剪枝 HDOJ(HDU).1015 Safecracker [从零开始DFS(2)] -DFS四向搜索变种 HDOJ(HDU).1016 Prime Ring Problem (…