Problem Description

Given a year and a month, output how many days there are in that month of that year. Leap years must be considered.

Input Format

Input two positive integers, representing the year $y$ and the month $m$, separated by a space.

Output Format

Output one line containing one positive integer, indicating how many days there are in that month.

1926 8

31

2000 2

29

Hint

Constraints: $1583 \leq y \leq 2020$, $1 \leq m \leq 12$.

Translated by ChatGPT 5