Problem Description Give you a lot of positive integers, just to find out how many prime numbers there are. Input There are a lot of cases. In each case, there is an integer N representing the number of integers to find. Each integer won't exceed 32-…

How many prime numbers Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 12955    Accepted Submission(s): 4490 Problem Description   Give you a lot of positive integers, just to find out how many…

http://acm.hdu.edu.cn/showproblem.php?pid=2138 题意:给n个数判断有几个素数.(每个数<=2^32) #include <cstdio> using namespace std; typedef long long ll; ll ipow(ll a, ll b, ll m) { ll x=1; for(; b; b>>=1, (a*=a)%=m) if(b&1) (x*=a)%=m; return x; } ll rand…

米勒罗宾素数测试: /* if n < 1,373,653, it is enough to test a = 2 and 3. if n < 9,080,191, it is enough to test a = 31 and 73. if n < 4,759,123,141, it is enough to test a = 2, 7, and 61. if n < 2,152,302,898,747, it is enough to test a = 2, 3, 5, 7,…

题意:给定一个数,判断是不是素数. 析:由于数太多,并且太大了,所以以前的方法都不适合,要用米勒拉宾算法. 代码如下: #include <iostream> #include <cstdio> #include <algorithm> #include <queue> #include <vector> #include <cstring> #include <map> #include <cctype> u…

How many prime numbers Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 14686    Accepted Submission(s): 5093 Problem Description   Give you a lot of positive integers, just to find out how many…

Sum of Consecutive Prime Numbers Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 19895   Accepted: 10906 Description Some positive integers can be represented by a sum of one or more consecutive prime numbers. How many such representatio…

Alexandra and Prime Numbers Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1658    Accepted Submission(s): 565 Problem Description Alexandra has a little brother. He is new to programming. One…

How many prime numbers Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 14684    Accepted Submission(s): 5091 Problem Description   Give you a lot of positive integers, just to find out how many…

题目链接 Description Final Pan likes prime numbers very much. One day, he want to find the super prime numbers.A prime numbers $n$($n$>4) is a super prime number only if $n$-4 and $n$+4 are both prime numbers,too. Your task is really easy:Give $N$,find t…