Can we take some elements again if they occur in two subarrays with distinct elements.
like in {9,7,1,3,7,8} should we count 1,3 twice as it occurs in 9,7,1,3 and 1,3,7,8??
I didn't understand the question
Nope, not like this.
Think array_index wise.
[i,j] can be taken once.
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