Problem DescriptionEverybody knows any number can be combined by the prime number.Now, your task is telling me what position of the largest prime fact...
分类:
其他好文 时间:
2015-08-05 20:03:57
阅读次数:
128
Euler is a well-known matematician, and, among many other things, he discovered that the formula n 2 + n + 41 produces a prime for 0 ≤ n #include #inc...
分类:
其他好文 时间:
2015-08-05 19:56:48
阅读次数:
134
裸最小生成树
注意重边
#include
#include
#include
#include
int visited[105],map[105][105],lowcost[105],n,m;
int prime(int v)
{
int i,j,minn,k,sum=0;
for(i=1;i
lowcost[i]=map[v][i];
...
分类:
其他好文 时间:
2015-08-05 18:33:38
阅读次数:
139
题意就是求a!/b!的素因子的个数
也就是a!的-b!的
重复的算多次
#include
#include
#include
#include
using namespace std;
const int maxn = 5000010;
bool is_prime[maxn];
int p, mpf[maxn], nf[maxn], sum[maxn];
void...
分类:
其他好文 时间:
2015-08-05 14:51:36
阅读次数:
83
Description:Count the number of prime numbers less than a non-negative number,n.传送门:https://leetcode.com/problems/count-primes/尽可能把查找次数缩小,直接用双重for会超时。...
分类:
编程语言 时间:
2015-08-05 10:27:34
阅读次数:
366
Prime Ring ProblemTime Limit: 4000/2000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 34108Accepted Submission(s): 150...
分类:
其他好文 时间:
2015-08-05 10:24:30
阅读次数:
115
Description:Count the number of prime numbers less than a non-negative number,n.Credits:Special thanks to@mithmattfor adding this problem and creatin....
分类:
其他好文 时间:
2015-08-05 00:51:33
阅读次数:
104
1.写个程序,接受用户输入数字,并进行校验,非数字给出错误提示,然后重新等待用户输入。2.根据用户输入数字,输出从0到该数字之间所有的素数。(只能被1和自身整除的数为素数)num=int(num)i=2is_prime=Falsewhilei<num:foriiinrange(2,i):ifi%ii==0:is_prime=Falsebreakel..
分类:
其他好文 时间:
2015-08-04 23:16:28
阅读次数:
154
Problem DescriptionEddy's interest is very extensive, recently he is interested in prime number. Eddy discover the all number owned can be divided int...
分类:
其他好文 时间:
2015-08-04 15:23:26
阅读次数:
95
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...
分类:
其他好文 时间:
2015-08-04 11:10:54
阅读次数:
104