Problem Description

Today, I'm shopping with my admired senpai! After shopping, we'll have tea together and create many other memories...

I didn't notice it's already this late! If I don't get home by the 18:00 curfew, Papa will get angry＞＜.

So, as a friend, you are tasked with calculating how many minutes are left until the curfew from the current time.

Input Format

The input is given from the standard input in the following format:

$ h $ $ m $

• The first line contains two integers $h\ (0\ ≦\ h\ ≦\ 17)$, $m\ (0\ ≦\ m\ ≦\ 59)$ separated by a space. These represent the current time in 24-hour notation as $ h $ hours and $ m $ minutes exactly.

Output Format

Output how many minutes are left until the curfew at 18:00. Ensure a newline at the end of the output.

Sample Input and Output

Sample Input #1

16 23

Sample Output #1

97

Sample Input #2

17 59

Sample Output #2

1

Sample Input #3

13 0

Sample Output #3

300

Sample Input #4

2 7

Sample Output #4

953

Notes/Hints

Sample Explanation 1

The current time is 16:23. There are 1 hour and 37 minutes left until the curfew, so the answer is $60\ +\ 37\ =\ 97$.

Sample Explanation 2

There's only 1 minute left! Hurry up!

见题面 Input 部分

见题面 Output 部分