Driver Code
if __name__ == ' _ _ main _ _ ' : NEW_LINE INDENT root = newNode ( 1 ) NEW_LINE root . left = newNode ( 2 ) NEW_LINE root . right = newNode ( 3 ) NEW_LINE root . left . left = newNode ( 4 ) NEW_LINE root . left . right = newNode ( 3 ) NEW_LINE root . right . right = newNode ( 4 ) NEW_LINE root . right . left = newNode ( 4 ) NEW_LINE dist = 7 NEW_LINE solve ( root , dist ) NEW_LINE DEDENT