Karen and Morning

## 题目描述 可怜已经准备好迎接在学校的新的一天。 现在是hh:mm，一个被以24小时制给与的时间。正如你所知道的，可怜喜欢回文，并且她相信如果在她醒来时的时间是回文的话会给她带来好运。 当她醒来时时间是回文的话，她最少应当睡多长时间？ 记住，一个回文数是一个从前读和从后读相同的字符串。例如，05:39是不是回文数，因为05:39倒着读是93:50。另一方面，05:50是回文，因为05:50倒着读是05:50。 ### 输入格式： 仅有一行，包含一个格式为hh:mm的字符串（$00\leq hh\leq23,00\leq mm\leq59$ ）。 ### 输出格式： 仅输出一行一个整数，表示要使她醒来时的时间是回文，她所睡的最少时间。 ### 说明 在第一个样例中，可怜最少应睡的时间为$11$ ，这样她可以在05:50时醒来，这是一个回文时间。 在第二个样例中，可怜可以立刻起来，当前时间13:31就是一个回文。 在第三个样例中，可怜最少应睡的时间为$1$ 分钟。她可以在00:00醒来，这是一个回文时间。 感谢@Khassar 提供的翻译

Karen is getting ready for a new school day! It is currently hh:mm, given in a 24-hour format. As you know, Karen loves palindromes, and she believes that it is good luck to wake up when the time is a palindrome. What is the minimum number of minutes she should sleep, such that, when she wakes up, the time is a palindrome? Remember that a palindrome is a string that reads the same forwards and backwards. For instance, 05:39 is not a palindrome, because 05:39 backwards is 93:50. On the other hand, 05:50 is a palindrome, because 05:50 backwards is 05:50.

The first and only line of input contains a single string in the format hh:mm ( $ 00<= $ hh $ <=23 $ , $ 00<= $ mm $ <=59 $ ).

Output a single integer on a line by itself, the minimum number of minutes she should sleep, such that, when she wakes up, the time is a palindrome.

05:39

11

13:31

0

23:59

1

In the first test case, the minimum number of minutes Karen should sleep for is $ 11 $ . She can wake up at 05:50, when the time is a palindrome. In the second test case, Karen can wake up immediately, as the current time, 13:31, is already a palindrome. In the third test case, the minimum number of minutes Karen should sleep for is $ 1 $ minute. She can wake up at 00:00, when the time is a palindrome.