please have a look at my code ia m using the same logic along with bfs but getting wa
i have solved the question using disjoint set data structure . I have heavily commented my code if anybody wants to solve by using disjoint set and finding difficulty here is my code.
Happy Coding 
can anyone tell me why we did (components-2)*global_min .
can anyone tell me why we did (components-2)*global_min .
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