这真是一个耗CPU的运算,怪不得现在因式分解和素数查找现在都用于加密运算. By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the 10 001st prime number? def isprime(n): boolisprime = True for i in xrange(2,n): if n % i == 0: bool…

C - Prime number or not Time Limit:2000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice FZU 1649 Description Your task is simple.Give you a number N, you should judge whether N is a prime number or not. Input There…

Given two integers L and R, find the count of numbers in the range [L, R] (inclusive) having a prime number of set bits in their binary representation. (Recall that the number of set bits an integer has is the number of 1s present when written in bin…

Given two integers L and R, find the count of numbers in the range [L, R] (inclusive) having a prime number of set bits in their binary representation. (Recall that the number of set bits an integer has is the number of 1s present when written in bin…

［抄题］: Given two integers L and R, find the count of numbers in the range [L, R] (inclusive) having a prime number of set bits in their binary representation. (Recall that the number of set bits an integer has is the number of 1s present when written…

Given two integers L and R, find the count of numbers in the range [L, R] (inclusive) having a prime number of set bits in their binary representation. (Recall that the number of set bits an integer has is the number of 1s present when written in bin…

Given two integers L and R, find the count of numbers in the range [L, R](inclusive) having a prime number of set bits in their binary representation. (Recall that the number of set bits an integer has is the number of 1s present when written in bina…

题目链接:http://ac.jobdu.com/problem.php?pid=1040 详解链接:https://github.com/zpfbuaa/JobduInCPlusPlus 参考代码: // // 1040 Prime Number.cpp // Jobdu // // Created by PengFei_Zheng on 12/04/2017. // Copyright © 2017 PengFei_Zheng. All rights reserved. // #includ…

题目描述 Output the k-th prime number. 输入 k≤10000 输出 The k-th prime number. 样例输入 10 50 样例输出 29 229 #include<bits/stdc++.h> using namespace std; ; int prime[N]; bool vis[N]; ; void isprime(int n) { fill(vis,vis+N,false); cnt=; ; i<n; i++) { if(!vis[i]…

Description Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the f…