CF-816A

A. Karen and Morning

time limit per test

2 seconds

memory limit per test

512 megabytes

input

standard input

output

standard output

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.

Input

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

Output

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.

Examples

input

05:39

output

11

input

13:31

output

0

input

23:59

output

1

Note

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.

转换一下数字再对比即可

AC代码：

#include<bits/stdc++.h>
using namespace std;

char t;
int n,k;
int ans=0;

int check(int n,int k){
    if(k%10*10+k/10==n){
        cout<<ans<<endl;
        return 1;
    }
    return 0;
}

int main(){
    ios::sync_with_stdio(false);
    cin>>n>>t>>k;
    while(1){
        if(check(n,k))
        break;
        k++;
        if(k==60){
            n++;
            k=0;
        }
        if(n==24){
            n=0;
            k=0;
        }
        ans++;
        //cout<<n<<" "<<k<<endl;
    }
    return 0;
}