info.txt

> Notes: For convenience, we will simulate the real-life implementation by using:
> * an input file, having the following structure:
>    * *the first line:*
>       * starts with _"N:"_
>       * the number N of total parking spaces
>       * ex.: _N:43_
>    * *the second line (optional):*
>       * starts with _"B:"_
>       * the pollution buffer (percentage)
>       * ex.: _B:10_
>    * *the third line:*
>       * starts with _"X:"_
>       * the number X of total entries
>       * ex.: _X:2_
>    * *the following X lines:*
>       * start with _"I:"_
>       * the action sequence for each entry - **1** for a car entry, **0** for no entry
>       * ex.: _I:100111000_
>    * *the following line (optional):*
>       * starts with _"P:"_
>       * the action sequence for parking - **1** for a car park, **0** for no park, **2** for a car leaving without exit (un-park)
>       * ex.: _P:001011201_
>    * *the last line:*
>       * starts with _"E:"_
>       * the action sequence for the exit - **1** for a car exit, **0** for no exit
>       * ex.: _E:000001111_
>
> * an output file, having the following structure:
>    * *the first line:*
>       * starts with _"T:"_
>       * the sequence of total cars in the parking lot (at a given moment)
>       * ex.: _T:123576543_
>    * *the second line (optional):*
>       * starts with _"P:"_
>       * the sequence of parked cars in the parking lot (at a given moment)
>       * ex.: _P:001123223_
>    * *the third line:*
>       * starts with _"R:"_
>       * the sequence of not yet parked cars in the parking lot, with their engine running (at a given moment)
>       * ex.: _R:122453320