+ محدودیت زمان: ۱ ثانیه + محدودیت حافظه: ۲۵۶ مگابایت ---------- Tehran municipality has set up a new charging method for the Congestion Charging Zone (CCZ) which controls the passage of vehicles in Tehran’s high-congestion areas in the congestion period (CP) from 6:30 to 19:00. There are plate detection cameras inside or at the entrances of the CCZ recording vehicles seen at the CCZ. The table below summarizes the new charging method. |The first time seen in the CP | The last time seen in the CP | Charge| |:----:|:----:|:-----:| |6:30 to 10:00 | 6:30 to 16:00 | 24000| |6:30 to 10:00 | 16:01 to 19:00 | 36000| |10:01 to 16:00 | 10:01 to 16:00 | 16800| |10:01 to 19:00 | 16:01 to 19:00 | 24000| Note that the first time and the last time that a vehicle is seen in the CP may be the same. Write a program to compute the amount of charge of a given vehicle in a specific day. # ورودی The first line of the input contains a positive integer $n$ ($1 \leq n \leq 100$) where $n$ is the number of records for a vehicle. Each of the next $n$ lines contains a time at which the vehicle is seen. Each time is of form `<hour>:<minute>`, where `<hour>` is an integer number between $0$ and $23$ (inclusive) and `<minute>` is formatted as an exactly two-digit number between $00$ and $59$ (inclusive). # خروجی Print the charge to be paid by the owner of the vehicle in the output. # مثال ## ورودی نمونه ۱ ``` 4 7:30 2:20 7:30 17:30 ``` ## خروجی نمونه ۱ ``` 36000 ``` ## ورودی نمونه ۲ ``` 1 12:13 ``` ## خروجی نمونه ۲ ``` 16800 ``` ## ورودی نمونه ۳ ``` 2 0:30 23:30 ``` ## خروجی نمونه ۳ ``` 0 ```