The task is this:
you need to programmatically create 300 Marker components on the map and then assign them the coordinates that I have in the csv file. Actually, how to create components using a loop and write them to an array? or so it is impossible here. Well, then I will refer to them using this array.
P. S. do not want to add 300 elements manually to the field, and then to the array.
A community search for map markers may have helped you......
Also see here:
I need to create components in a loop
Why using a loop? what does in a loop mean to you?
This nonsense code creates 300 random run time Map Marker components.
If you use it with a List of 300 latitude/longitude pairs you got your app possibly 
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