Big Number Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 37732    Accepted Submission(s): 18174 Problem Description In many applications very large integers numbers are required. Some of these…

    n!的长度为 ll ans = log10(2*pi*n)/2 + n*(log10(n/exp(1.0)))+1;  …

数的长度 时间限制:3000 ms  |  内存限制:65535 KB 难度:1   描述 N!阶乘是一个非常大的数,大家都知道计算公式是N!=N*(N-1)······*2*1.现在你的任务是计算出N!的位数有多少(十进制)?   输入 首行输入n,表示有多少组测试数据(n<10)随后n行每行输入一组测试数据 N( 0 < N < 1000000 ) 输出 对于每个数N,输出N!的(十进制)位数. 样例输入 3 1 3 32000 样例输出 1 1 130271 斯特林公式:S=log…

法一:对一个数求它的对数,+1取整为其位数 问题转化为int (log10(N!)+1),对数性质log10(N!)=log10(N)+log10(N-1)+...+log10(1) /*用log10求位数*/ #include<stdio.h> #include<math.h> int main() { int tim,N; scanf("%d",&tim); while(tim--) { int i; double NumOfDigit=1; sca…

Problem Description In many applications very large integers numbers are required. Some of these applications are using keys for secure transmission of data, encryption, etc. In this problem you are given a number, you have to determine the number of…

瘋耔C++笔记 欢迎关注瘋耔新浪微博:http://weibo.com/cpjphone 参考:C++程序设计(谭浩强) 参考:http://c.biancheng.net/cpp/biancheng/cpp/rumen_8/ 博客原文:http://www.cnblogs.com/Ph-one/p/3974707.html 一.C++初步认识 1.C++输入.输出.头文件解释 #include<iostream> using namespace std ; int mian() { cout…

Big Number Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 27027   Accepted: 8626 Description In many applications very large integers numbers are required. Some of these applications are using keys for secure transmission of data, encry…

Big Number Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 35382    Accepted Submission(s): 16888 Problem Description In many applications very large integers numbers are required. Some of these…

求某个大数的阶乘的位数 . 得到的值  需要 +1 得到真正的位数 斯特林公式在理论和应用上都具有重要的价值,对于概率论的发展也有着重大的意义.在数学分析中,大多都是利用Г函数.级数和含参变量的积分等知识进行证明或推导,很为繁琐冗长.近年来,一些国内外学者利用概率论中的指数分布.泊松分布.χ²分布证之. #include<stdio.h> #include<string.h> #include<math.h> #include<iostream> #incl…

http://acm.hdu.edu.cn/showproblem.php?pid=1018 Big Number Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 41932    Accepted Submission(s): 20544 Problem Description In many applications very lar…