poj 1013 Counterfeit Dollar

Time Limit: 1000MS		Memory Limit: 10000K
Total Submissions: 25296		Accepted: 7872

本题因为题意说肯定能够称出来，所以不用担心他是怎么称的，只要对几种情况进行穷举即可

代码：

 

  
    

   
     
   
      1 
   
     #include
   
     <
   
     stdio.h
   
     >
   
     

   
      2 
   
     #include
   
     <
   
     string
   
     .h
   
     >
   
     

   
      3 
   
      
   
     char
   
      a[
   
     5
   
     ][
   
     10
   
     ],b[
   
     5
   
     ][
   
     10
   
     ],c[
   
     5
   
     ][
   
     10
   
     ];

   
      4 
   
      
   
     int
   
      islight(
   
     char
   
      x)

   
      5 
   
     {

   
      6 
   
      
   
     int
   
      i;

   
      7 
   
      
   
     for
   
     (i
   
     =
   
     1
   
     ;i
   
     <=
   
     3
   
     ;i
   
     ++
   
     )

   
      8 
   
      {

   
      9 
   
      
   
     switch
   
     (c[i][
   
     0
   
     ])

   
     10 
   
      {

   
     11 
   
      
   
     case
   
      
   
     '
   
     u
   
     '
   
     :
   
     if
   
     (strchr(b[i],x)
   
     ==
   
     NULL) 
   
     return
   
      
   
     0
   
     ;
   
     break
   
     ;

   
     12 
   
      
   
     case
   
      
   
     '
   
     e
   
     '
   
     :
   
     if
   
     (strchr(a[i],x)
   
     !=
   
     NULL
   
     ||
   
     strchr(b[i],x)
   
     !=
   
     NULL) 
   
     return
   
      
   
     0
   
     ;
   
     break
   
     ;

   
     13 
   
      
   
     case
   
      
   
     '
   
     d
   
     '
   
     :
   
     if
   
     (strchr(a[i],x)
   
     ==
   
     NULL) 
   
     return
   
      
   
     0
   
     ;
   
     break
   
     ;

   
     14 
   
      }

   
     15 
   
      }

   
     16 
   
      
   
     return
   
      
   
     1
   
     ;

   
     17 
   
     }

   
     18 
   
     
   
     int
   
      isheavy(
   
     char
   
      x)

   
     19 
   
     {

   
     20 
   
      
   
     int
   
      i;

   
     21 
   
      
   
     for
   
     (i
   
     =
   
     1
   
     ;i
   
     <=
   
     3
   
     ;i
   
     ++
   
     )

   
     22 
   
      {

   
     23 
   
      
   
     switch
   
     (c[i][
   
     0
   
     ])

   
     24 
   
      {

   
     25 
   
      
   
     case
   
      
   
     '
   
     u
   
     '
   
     :
   
     if
   
     (strchr(a[i],x)
   
     ==
   
     NULL) 
   
     return
   
      
   
     0
   
     ;
   
     break
   
     ;

   
     26 
   
      
   
     case
   
      
   
     '
   
     e
   
     '
   
     :
   
     if
   
     (strchr(a[i],x)
   
     !=
   
     NULL
   
     ||
   
     strchr(b[i],x)
   
     !=
   
     NULL) 
   
     return
   
      
   
     0
   
     ;
   
     break
   
     ;

   
     27 
   
      
   
     case
   
      
   
     '
   
     d
   
     '
   
     :
   
     if
   
     (strchr(b[i],x)
   
     ==
   
     NULL) 
   
     return
   
      
   
     0
   
     ;
   
     break
   
     ;

   
     28 
   
      }

   
     29 
   
      }

   
     30 
   
      
   
     return
   
      
   
     1
   
     ;

   
     31 
   
     }

   
     32 
   
     
   
     int
   
      main()

   
     33 
   
     {

   
     34 
   
      
   
     int
   
      n,i;
   
     char
   
      t;

   
     35 
   
      scanf(
   
     "
   
     %d
   
     "
   
     ,
   
     &
   
     n);

   
     36 
   
      
   
     while
   
     (n
   
     --
   
     )

   
     37 
   
      {

   
     38 
   
      
   
     for
   
     (i
   
     =
   
     1
   
     ;i
   
     <=
   
     3
   
     ;i
   
     ++
   
     )

   
     39 
   
      scanf(
   
     "
   
     %s%s%s
   
     "
   
     ,a[i],b[i],c[i]);

   
     40 
   
      
   
     for
   
     (t
   
     =
   
     '
   
     A
   
     '
   
     ;t
   
     <=
   
     '
   
     L
   
     '
   
     ;t
   
     ++
   
     )

   
     41 
   
      {

   
     42 
   
      
   
     if
   
     (islight(t))

   
     43 
   
      {

   
     44 
   
      printf(
   
     "
   
     %c is the counterfeit coin and it is light.\n
   
     "
   
     ,t);

   
     45 
   
      
   
     break
   
     ;

   
     46 
   
      }

   
     47 
   
      
   
     if
   
     (isheavy(t))

   
     48 
   
      {

   
     49 
   
      printf(
   
     "
   
     %c is the counterfeit coin and it is heavy.\n
   
     "
   
     ,t);

   
     50 
   
      
   
     break
   
     ;

   
     51 
   
      }

   
     52 
   
      }

   
     53 
   
      }

   
     54 
   
      
   
     return
   
      
   
     0
   
     ;

   
     55 
   
     }

   
     56 
   
     

   
     57