poj2590

简单题，注意判断0

View Code

   
     

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

    
      using
    
       
    
      namespace
    
       std;


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

    
       
    
      int
    
       t;
 scanf(
    
      "
    
      %d
    
      "
    
      , 
    
      &
    
      t);
 
    
      while
    
       (t
    
      --
    
      )
 {
 
    
      int
    
       a, b;
 scanf(
    
      "
    
      %d%d
    
      "
    
      , 
    
      &
    
      a, 
    
      &
    
      b);
 
    
      int
    
       c 
    
      =
    
       abs(b 
    
      -
    
       a);
 
    
      if
    
       (c 
    
      ==
    
       
    
      0
    
      )
 {
 printf(
    
      "
    
      0\n
    
      "
    
      );
 
    
      continue
    
      ;
 }
 
    
      int
    
       x 
    
      =
    
       ceil(sqrt(c));
 
    
      while
    
       (x 
    
      *
    
       x 
    
      >=
    
       c)
 x
    
      --
    
      ;
 
    
      int
    
       y 
    
      =
    
       c 
    
      -
    
       x 
    
      *
    
       x;
 
    
      if
    
       (y 
    
      <=
    
       x)
 printf(
    
      "
    
      %d\n
    
      "
    
      , x 
    
      *
    
       
    
      2
    
      );
 
    
      else
    
      
 printf(
    
      "
    
      %d\n
    
      "
    
      , x 
    
      *
    
       
    
      2
    
       
    
      +
    
       
    
      1
    
      );
 }
 
    
      return
    
       
    
      0
    
      ;
}