adding edges to the tree
addEdge ( 1 , 2 ) ; addEdge ( 1 , 3 ) ; addEdge ( 1 , 4 ) ; addEdge ( 2 , 5 ) ; addEdge ( 2 , 6 ) ; addEdge ( 3 , 7 ) ; addEdge ( 4 , 8 ) ; addEdge ( 4 , 9 ) ; addEdge ( 9 , 10 ) ; addEdge ( 9 , 11 ) ; addEdge ( 7 , 12 ) ; addEdge ( 7 , 13 ) ; preprocess ( ) ; System . out . println ( " LCA ( 11,8 ) ▁ : ▁ " + LCANaive ( 11 , 8 ) ) ; System . out . println ( " LCA ( 3,13 ) ▁ : ▁ " + LCANaive ( 3 , 13 ) ) ; } }