Generic tree input

#1

what is generic tree and how we gonna take input

#2

A generic tree is a tree where any node can have any number of children (unlike binary trees where a node can have atmost 2 children).

The first integer in each row indicates the data at the node whereas the second integer indicates the no of children that node has .
As for the sample testcase given in the problem
1 2
2 2
3 0
4 0
5 2
6 0
7 0
2

Here the tree looks like

                     1                                 Level 0
                /          \
              2              5                         Level 1
           /      \       /     \
          3       4      6        7                    Level 2