public static void main ( String [ ] args ) {
  int keys [ ] = {
    10 , 12 , 20 };
    int freq [ ] = {
      34 , 8 , 50 };
      int n = keys . length ;
      System . out . println ( "Cost of Optimal BST is " + optimalSearchTree ( keys , freq , n ) ) ;
    }
    
public static void main ( String [ ] args ) { int keys [ ] = { 10 , 12 , 20 } ; int freq [ ] = { 34 , 8 , 50 } ; int n = keys . length ; System . out . println ( " Cost ▁ of ▁ Optimal ▁ BST ▁ is ▁ " + optimalSearchTree ( keys , freq , n ) ) ; }
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