hdu 4788 (2013成都现场赛 H题)

100MB=10^5KB=10^8B

100MB=100*2^10KB=100*2^20B

Sample Input
2
100[MB]
1[B]

Sample Output
Case #1: 4.63%
Case #2: 0.00%

 # include <iostream>
 # include <cstdio>
 # include <cstring>
 # include <algorithm>
 # include <string>
 # include <cmath>
 # include <queue>
 # include <list>
 # define LL long long
 using namespace std ;

 char s[];

 int change(char s[])
 {
     if(strcmp(s,"B]") == )return ;
     if(strcmp(s,"KB]") == )return ;
     if(strcmp(s,"MB]") == )return ;
     if(strcmp(s,"GB]") == )return ;
     if(strcmp(s,"TB]") == )return ;
     if(strcmp(s,"PB]") == )return ;
     if(strcmp(s,"EB]") == )return ;
     if(strcmp(s,"ZB]") == )return ;
     if(strcmp(s,"YB]") == )return ;
 }

 int main()
 {
     //freopen("in.txt","r",stdin) ;
     int T ;
     scanf("%d" , &T) ;
     int Case =  ;
     while(T--)
     {
         Case++ ;
         int x ;
         scanf("%d[%s" , &x , s) ;
         int t = change(s) ;
         double ans = pow(1000.0,t)/pow(1024.0,t) ;
         ans =  - ans ;
         printf("Case #%d: %.2lf%%\n",Case,ans*);

     }

     return ;
 }