It is the morning of December \(d\)-th. The first day of winter break is December 24th.

How many days are there left until the start of winter break?

Constraints

\(1 \le d \lt 24\)

Input Specification

The first and only line contains the current date.

Output Specification

Output the number of days left until the start of winter break.

Sample Input 1

22

Sample Output 1

2