Maximum of a General Tree (out) X17958

Write a program that reads a non-empty tree of integer numbers and writes its maximum value. Your program should define the function maxim(t) that returns the maxim of the values stored in a non-empty tree t. The parameter t of function maxim(t) should be an object of the class Tree, implemented in file simple_tree.py in the public files section of the problem statement.

For example, given the following specification of a tree in pre-ordre, where the value stored at each node is followed by its arity

Input

1 4
  3 2
      6 0
      -6 0
  12 0
  2 4
     3 0
     5 2
       10 0
       -13 0
     11 0
     7 0
  8 0

Your program should write

Output

12

Hint

Implement the following function in file simple_tree.py

def maxim(t):
   ...

and call that function from main after reading the tree.