AT_past19_a 毎時運行

There is a bus stop where buses depart at $ X $ minutes past each hour. For example, if $ X=10 $ , buses depart at $ 0:10 $ , $ 1:10 $ , $ \ldots $ , and $ 23:10 $ . No buses depart at any other time. It is currently $ M $ minutes past $ H $ ( $ M\neq X $ ). How many minutes are left before the next bus departs?

The input is given from Standard Input in the following format: > $ X $ $ H $ $ M $

Print the answer as an integer.

### Sample Explanation 1 It is $ 14:10 $ now. The next bus departs at $ 14:30 $ , which is $ 20 $ minutes from now. ### Sample Explanation 2 It is $ 23:30 $ now. The next bus departs at $ 0:12 $ on the next day, which is $ 42 $ minutes from now. ### Constraints - $ 0\leq H \leq 23 $ - $ 0\leq X,M \leq 59 $ - $ X\neq M $ - All input values are integers.