CF816A.Karen and Morning

普及/提高-

通过率：0%

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题目描述

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.

输入格式

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

输出格式

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.

输入输出样例

输入#1
```
05:39
```
输出#1
```
11
```
输入#2
```
13:31
```
输出#2
```
0
```
输入#3
```
23:59
```
输出#3
```
1
```

说明/提示

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.

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