poj3475

简单题

View Code

   
     

    
      #include 
    
      <
    
      iostream
    
      >
    
      
#include 
    
      <
    
      cstdlib
    
      >
    
      
#include 
    
      <
    
      cstring
    
      >
    
      
#include 
    
      <
    
      cstdio
    
      >
    
      

    
      using
    
       
    
      namespace
    
       std;


    
      #define
    
       eps 1.0e-8
    
      


    
      int
    
       work(
    
      double
    
       a, 
    
      double
    
       b, 
    
      double
    
       c, 
    
      double
    
       d)
{
 
    
      int
    
       ret 
    
      =
    
       
    
      0
    
      ;
 
    
      while
    
       (c 
    
      >
    
       a 
    
      +
    
       eps)
 {
 ret
    
      ++
    
      ;
 c 
    
      /=
    
       
    
      2
    
      ;
 }
 
    
      while
    
       (d 
    
      >
    
       b 
    
      +
    
       eps)
 {
 ret
    
      ++
    
      ;
 d 
    
      /=
    
       
    
      2
    
      ;
 }
 
    
      return
    
       ret;
}


    
      int
    
       main()
{
 
    
      //
    
      freopen("D:\\t.txt", "r", stdin);
    
      

    
       
    
      int
    
       a, b, c, d;
 
    
      while
    
       (scanf(
    
      "
    
      %d%d%d%d
    
      "
    
      , 
    
      &
    
      a, 
    
      &
    
      b, 
    
      &
    
      c, 
    
      &
    
      d) 
    
      !=
    
       EOF)
 {
 
    
      int
    
       ans1 
    
      =
    
       work(a, b, c, d);
 
    
      int
    
       ans2 
    
      =
    
       work(b, a, c, d);
 
    
      int
    
       ans 
    
      =
    
       min(ans1, ans2);
 printf(
    
      "
    
      %d\n
    
      "
    
      , ans);
 }
 
    
      return
    
       
    
      0
    
      ;
}