| ||||||||||
| Online Judge | Problem Set | Authors | Online Contests | User | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Web Board Home Page F.A.Qs Statistical Charts | Current Contest Past Contests Scheduled Contests Award Contest | |||||||||
Re:a是多少In Reply To:Re:什么是“有问题”?什么是“真正”?Stirling公式本来就是用~而不是用=的 Posted by:fzk at 2005-07-24 11:07:21 > #include <stdio.h>
> #include <math.h>
>
> int n;
> const double e = 2.7182818284590452354, pi = 3.141592653589793239;
>
> double f( int a )
> {
> return log10( sqrt( 2 * pi * a ) ) + a * log10( a / e );
> }
>
> int main()
> {
> int i, cas;
> double s;
>
> scanf( "%d", &cas );
>
> while( cas-- )
> {
> scanf( "%d", &n );
>
> if( n < 100000 )
> {
> for( s=0, i=1; i<=n; i++ )
> s += log10( i );
> }
> else s = f( n );
>
>
> printf( "%d\n", (int)(s+1e-7) );
> }
>
> return 0;
> }
>
Followed by: Post your reply here: |
All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator