"""
Write a method to count the number of 2s that appear in all the
numbers between 0 and n (inclusive).

EXAMPLE
Input: 25
Output: 9 (2, 12, 20, 21, 22, 23, 24, and 25. Note that 22 counts for two 2s)

Brute force. Convert the number to string, then to list digits. Count 2s.
"""

# TODO

81acd577737b1f60d927d92535c7852c2d97781a
<mask token>

"""
Write a method to count the number of 2s that appear in all the
numbers between 0 and n (inclusive).

EXAMPLE
Input: 25
Output: 9 (2, 12, 20, 21, 22, 23, 24, and 25. Note that 22 counts for two 2s)

Brute force. Convert the number to string, then to list digits. Count 2s.
"""

# TODO
