sir what is difference between set and map and why we are using set here
What is difference between set and map
@raghavthecoder map can store two values its of type map<int,int> h where key is first one.
set only contains one that is key set h
properties of both are same sorted and all.
you can use any one of them but set consumes less space
hope its clear if yes dont forget to hit like and mark resolved 
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