Each interval takes 45 minutes, and two examiners ask two coding questions independently.

I applied for the summer internship, and it took three weeks to arrange the interview. The results came one week after the interview.

The interview uses Google Docs for editing answers, and you have a video call with the examiner.

Compare trees for text equality.

You are given two trees, each containing a string at its leaves. The text of a tree is the ordered concatenation of these strings.

Write a function that compares the text of two trees.

Example 1: . /
/
"2" "3" => "23"

Example 2: . /
/ "3" "2" => "23"