UNIONSET code review June Long, How this can be optimized ?

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Use frequency hashes for data storing and manipulation

See my code :::
https://www.codechef.com/viewsolution/14110320

Add a condition between your loops about sum of lengths of array being less than k, if sum of length is less than k, don’t proceed. For details check : https://www.codechef.com/viewsolution/14098476

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