poj1350

简单题

View Code

   
     

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

    
      using
    
       
    
      namespace
    
       std;


    
      char
    
       st[
    
      100
    
      ];


    
      bool
    
       check()
{
 
    
      for
    
       (
    
      int
    
       i 
    
      =
    
       
    
      1
    
      ; i 
    
      <
    
       
    
      4
    
      ; i
    
      ++
    
      )
 
    
      if
    
       (st[i] 
    
      !=
    
       st[i 
    
      -
    
       
    
      1
    
      ])
 
    
      return
    
       
    
      true
    
      ;
 
    
      return
    
       
    
      false
    
      ;
}


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

    
       
    
      while
    
       (scanf(
    
      "
    
      %s
    
      "
    
      , st) 
    
      !=
    
       EOF)
 {
 
    
      if
    
       (st[
    
      0
    
      ] 
    
      ==
    
       
    
      '
    
      -
    
      '
    
      )
 
    
      break
    
      ;
 printf(
    
      "
    
      N=%s:\n
    
      "
    
      , st);
 
    
      if
    
       (
    
      !
    
      check() 
    
      ||
    
       strlen(st) 
    
      !=
    
       
    
      4
    
      )
 {
 printf(
    
      "
    
      No!!\n
    
      "
    
      );
 
    
      continue
    
      ;
 }
 
    
      int
    
       t 
    
      =
    
       
    
      0
    
      ;
 
    
      int
    
       len 
    
      =
    
       
    
      4
    
      ;
 
    
      while
    
       (
    
      1
    
      )
 {
 sort(st, st 
    
      +
    
       len);
 
    
      int
    
       x, y;
 x 
    
      =
    
       y 
    
      =
    
       
    
      0
    
      ;
 
    
      for
    
       (
    
      int
    
       i 
    
      =
    
       len 
    
      -
    
       
    
      1
    
      ; i 
    
      >=
    
       
    
      0
    
      ; i
    
      --
    
      )
 x 
    
      =
    
       x 
    
      *
    
       
    
      10
    
       
    
      +
    
       st[i] 
    
      -
    
       
    
      '
    
      0
    
      '
    
      ;
 
    
      for
    
       (
    
      int
    
       i 
    
      =
    
       
    
      0
    
      ; i 
    
      <
    
       len; i
    
      ++
    
      )
 y 
    
      =
    
       y 
    
      *
    
       
    
      10
    
       
    
      +
    
       st[i] 
    
      -
    
       
    
      '
    
      0
    
      '
    
      ;
 printf(
    
      "
    
      %d-%d=%d\n
    
      "
    
      , x, y, x 
    
      -
    
       y);
 t
    
      ++
    
      ;
 
    
      if
    
       (x 
    
      -
    
       y 
    
      ==
    
       
    
      6174
    
       
    
      ||
    
       x 
    
      -
    
       y 
    
      ==
    
       
    
      0
    
      )
 
    
      break
    
      ;
 x 
    
      =
    
       x 
    
      -
    
       y;
 len 
    
      =
    
       
    
      0
    
      ;
 
    
      while
    
       (x 
    
      >
    
       
    
      0
    
      )
 {
 st[len] 
    
      =
    
       x 
    
      %
    
       
    
      10
    
       
    
      +
    
       
    
      '
    
      0
    
      '
    
      ;
 x 
    
      /=
    
       
    
      10
    
      ;
 len
    
      ++
    
      ;
 }
 }
 printf(
    
      "
    
      Ok!! %d times\n
    
      "
    
      , t);
 }
 
    
      return
    
       
    
      0
    
      ;
}