Prime Ring Problem Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 42600 Accepted Submission(s): 18885 Problem Description A ring is compose of n circles as shown in diagram. Put natural num…
UVA - 524 Prime Ring Problem Time Limit:3000MS Memory Limit:0KB 64bit IO Format:%lld & %llu Description A ring is composed of n (even number) circles as shown in diagram. Put natural numbers into each circle separately, and the sum of number…
Prime Ring Problem Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 34846 Accepted Submission(s): 15441 Problem Description A ring is compose of n circles as shown in diagram. Put natural numb…
题意 把1到n这n个数以1为首位围成一圈 输出全部满足随意相邻两数之和均为素数的全部排列 直接枚举排列看是否符合肯定会超时的 n最大为16 利用回溯法 边生成边推断 就要快非常多了 #include<cstdio> using namespace std; const int N = 50; int p[N], vis[N], a[N], n; int isPrime(int k) { for(int i = 2; i * i <= k; ++i) if(k % i == 0)…
Prime Ring Problem Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 34609 Accepted Submission(s): 15327 Problem Description A ring is compose of n circles as shown in diagram. Put natural numb…
题目链接: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) Problem Description A ring is compose of n circles as shown in diagram. Put natural number 1, 2…
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…
Problem Description 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. Note: the number of first circle should always be 1…
