Prime Ring Problem Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 20105    Accepted Submission(s): 9001 Problem Description A ring is compose of n circles as shown in diagram. Put natural numb…

题目: 输入正整数n,对1-n进行排列,使得相邻两个数之和均为素数,输出时从整数1开始,逆时针排列.同一个环应恰好输出一次.n<=16 如输入: 6 输出: 1 4 3 2 5 6 1 6 5 2 3 4 代码: import java.util.Scanner; public class 素数环 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt()…

Description   A ring is composed of n (even number) circles as shown in diagram. Put natural numbers 1,2,3,...,n into each circle separately, and the sum of numbers in two adjacent circles should be a prime. Note: the number of first circle should al…

 素数环 时间限制:1000 ms  |  内存限制:65535 KB 难度:2 描写叙述 有一个整数n,把从1到n的数字无反复的排列成环,且使每相邻两个数(包含首尾)的和都为素数,称为素数环. 为了简便起见,我们规定每一个素数环都从1開始.比如,下图就是6的一个素数环. 输入 有多组測试数据,每组输入一个n(0<n<20),n=0表示输入结束. 输出 每组第一行输出相应的Case序号,从1開始. 假设存在满足题意叙述的素数环,从小到大输出. 否则输出No Answer. 例子输入 6 8…

Problem 1010 - 素数环问题 Time Limit: 1000MS   Memory Limit: 65536KB   Difficulty: Total Submit: 972  Accepted: 223  Special Judge: No Description 有一个由n个数字相连组成的圆环(n<20),组成圆环的数字分别为1,2,3...n-1,n.要求每两个相邻元素的和为素数.(注意:第一个元素始终为1). Input n (0<n<20) Output 要求输…

Prime Ring Problem Time Limit : 4000/2000ms (Java/Other)   Memory Limit : 65536/32768K (Java/Other) Total Submission(s) : 18   Accepted Submission(s) : 7 Problem Description A ring is compose of n circles as shown in diagram. Put natural number 1, 2,…

传送门: http://acm.hdu.edu.cn/showproblem.php?pid=1016 Prime Ring Problem Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 63806    Accepted Submission(s): 27457 Problem Description A ring is compos…

素数环 时间限制:1000 ms  |  内存限制:65535 KB 难度:2   描述 有一个整数n,把从1到n的数字无重复的排列成环,且使每相邻两个数(包括首尾)的和都为素数,称为素数环. 为了简便起见,我们规定每个素数环都从1开始.例如,下图就是6的一个素数环.   输入 有多组测试数据,每组输入一个n(0<n<20),n=0表示输入结束. 输出 每组第一行输出对应的Case序号,从1开始. 如果存在满足题意叙述的素数环,从小到大输出. 否则输出No Answer. 样例输入 6 8 3…

http://acm.hdu.edu.cn/showproblem.php?pid=1016 Sample Input 6 8   Sample Output Case 1: 1 4 3 2 5 6 1 6 5 2 3 4 Case 2: 1 2 3 8 5 6 7 4 1 2 5 8 3 4 7 6 1 4 7 6 5 8 3 2 1 6 7 4 3 8 5 2 题意: 输入整数n (0 < n < 20). 找出n个整数,能组成一个环,环中任意相邻两数之和为素数,字典序输出所有情况,每种情…

Prime Ring Problem Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 74594    Accepted Submission(s): 31690 Problem Description A ring is compose of n circles as shown in diagram. Put natural numb…