poj2499

类似gcd，节点向根行走。

View Code

   
     

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

    
      using
    
       
    
      namespace
    
       std;


    
      int
    
       a, b;


    
      void
    
       work()
{
 
    
      int
    
       l 
    
      =
    
       
    
      0
    
      , r 
    
      =
    
       
    
      0
    
      ;

 
    
      while
    
       (a 
    
      !=
    
       
    
      1
    
       
    
      &&
    
       b 
    
      !=
    
       
    
      1
    
      )
 {
 
    
      if
    
       (a 
    
      >
    
       b)
 {
 l 
    
      +=
    
       a 
    
      /
    
       b;
 a 
    
      =
    
       a 
    
      %
    
       b;
 }
    
      else
    
      
 {
 r 
    
      +=
    
       b 
    
      /
    
       a;
 b 
    
      =
    
       b 
    
      %
    
       a;
 }
 }
 
    
      if
    
       (a 
    
      ==
    
       
    
      1
    
      )
 r 
    
      +=
    
       b 
    
      -
    
       
    
      1
    
      ;
 
    
      else
    
      
 l 
    
      +=
    
       a 
    
      -
    
       
    
      1
    
      ;
 printf(
    
      "
    
      %d %d\n\n
    
      "
    
      , l, r);
}


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

    
       
    
      int
    
       t, s 
    
      =
    
       
    
      0
    
      ;
 scanf(
    
      "
    
      %d
    
      "
    
      , 
    
      &
    
      t);
 
    
      while
    
       (t
    
      --
    
      )
 {
 s
    
      ++
    
      ;
 printf(
    
      "
    
      Scenario #%d:\n
    
      "
    
      , s);
 scanf(
    
      "
    
      %d%d
    
      "
    
      , 
    
      &
    
      a, 
    
      &
    
      b);
 work();
 }
 
    
      return
    
       
    
      0
    
      ;
}