Infosys Company Programming Technical

It is given that for a tree that has x nodes, if x-1 of it's nodes are leaves then this tree is a star.

You have N star trees and the number of leaves for each. We call a subset of star trees beautiful if they can be merged together.

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Infosys Other Question

If lotus and lily are chosen for functions on consecutive days then in which function is sunflower
a)mehendi
b)cocktail
c)lunch
d)marriage
e)sangeet
Can somebody explain me this ? A,B,C,D,E related. 4 of them made these statements each.1)C is my son in laws brother2)B is my fathers brother3)E is my mother in law4)A is my brothers wife. who made these statements?