- class Ideone { 
-   public static boolean f(final boolean x, final boolean y) { 
-     switch (x + "-" + y) { 
-       case "true-false": 
-         return false; 
-       case "false-true": 
-         return false; 
-       case "true-true": 
-         return true; 
-       case "false-false": 
-         return false; 
-     } 
-     return false; 
-   } 
-   
-   public static void-  main (final String[]-  args ) {
 
-   	System- . out- . println(- f (false- ,  false));
 
-     System- . out- . println(- f (false- ,  true));
 
-     System- . out- . println(- f (true- ,  false));
 
-     System- . out- . println(- f (true- ,  true));
 
-   } 
- } 
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