Given an array A of size n.count the number of pairs such that A[i]*A[j]==A[i]+A[j]. Since the constraint of A[i] is upto 10^9 and N is upto 40,000 , I cannot run the naive technique of running a double loop. Any other way to solve it in one loop?
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How to solve this question?
Given an array A of size n.count the number of pairs such that A[i]*A[j]==A[i]+A[j]. Since the constraint of A[i] is upto 10^9 and N is upto 40,000 , I cannot run the naive technique of running a double loop. Any other way to solve it in one loop?
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