How do I sort a 2d list

Question

I want to sort a 2d list according to its column element, however if some column elements are equal, I'd like them to be sorted in ascending order by the line element.

For instance:

1st line is the number of lines for the list
The others are the elements that will be in the list

Input:
4
5 10
6 3
7 3
15 10

Output:
6 3
7 3
5 10
15 10

However I get 7 3 before 6 3 which is a problem.
I use itemgetter to compare the column.
Thank you so much for your time!

Answer 1

Uses a lambda as sort function for `sorted` function

https://code.sololearn.com/cMqNIQLB1A3T/?ref=app