you give root binary tree unique value integer start at minute 0 infection start node value starteach minute node infect ifthe node currently uninfectedthe node adjacent infect nodeReturn number minute need entire tree infect Example 1input root 153null410692 start 3output 4explanation the follow node infect Minute 0 Node 3 Minute 1 Nodes 1 10 6 Minute 2 Node 5 Minute 3 Node 4 Minute 4 Nodes 9 2it take 4 minute tree infect return 4example 2input root 1 start 1output 0explanation at minute 0 node tree infect return 0 ConstraintsThe number nod tree range 1 1051 Nodeval 105each node unique valueA node value start exist tree