poj2192

简单题

View Code

   
     

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

    
      using
    
       
    
      namespace
    
       std;


    
      #define
    
       maxn 405
    
      


    
      char
    
       a[maxn], b[maxn], c[maxn];

    
      bool
    
       found;


    
      void
    
       work(
    
      int
    
       ap, 
    
      int
    
       bp, 
    
      int
    
       cp)
{
 
    
      if
    
       (found)
 
    
      return
    
      ;
 
    
      if
    
       (cp 
    
      ==
    
       
    
      -
    
      1
    
      )
 {
 found 
    
      =
    
       
    
      true
    
      ;
 
    
      return
    
      ;
 }
 
    
      if
    
       (ap 
    
      >=
    
       
    
      0
    
       
    
      &&
    
       c[cp] 
    
      ==
    
       a[ap])
 work(ap 
    
      -
    
       
    
      1
    
      , bp, cp 
    
      -
    
       
    
      1
    
      );
 
    
      if
    
       (bp 
    
      >=
    
       
    
      0
    
       
    
      &&
    
       c[cp] 
    
      ==
    
       b[bp])
 work(ap, bp 
    
      -
    
       
    
      1
    
      , cp 
    
      -
    
       
    
      1
    
      );
}

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

    
       
    
      int
    
       t;
 scanf(
    
      "
    
      %d
    
      "
    
      , 
    
      &
    
      t);
 
    
      for
    
       (
    
      int
    
       i 
    
      =
    
       
    
      0
    
      ; i 
    
      <
    
       t; i
    
      ++
    
      )
 {
 scanf(
    
      "
    
      %s
    
      "
    
      , a);
 scanf(
    
      "
    
      %s
    
      "
    
      , b);
 scanf(
    
      "
    
      %s
    
      "
    
      , c);
 found 
    
      =
    
       
    
      false
    
      ;
 work(strlen(a) 
    
      -
    
       
    
      1
    
      , strlen(b) 
    
      -
    
       
    
      1
    
      , strlen(c) 
    
      -
    
       
    
      1
    
      );
 printf(
    
      "
    
      Data set %d: 
    
      "
    
      , i 
    
      +
    
       
    
      1
    
      );
 
    
      if
    
       (found)
 printf(
    
      "
    
      yes\n
    
      "
    
      );
 
    
      else
    
      
 printf(
    
      "
    
      no\n
    
      "
    
      );
 }
 
    
      return
    
       
    
      0
    
      ;
}