Driver code
var a = [ 6 , 8 , 2 , 7 , 4 , 2 , 7 ] ; var b = [ 7 , 8 , 5 , 8 , 6 , 3 , 5 ] ; var c = [ 8 , 3 , 2 , 6 , 8 , 4 , 1 ] ; var n = a . length ; var dp = Array . from ( Array ( n ) , ( ) => Array ( n ) . fill ( - 1 ) ) ;