Viewing insights from 2022 AMC 12B Problem 3 that are similar (thus shared) with only this insight from Codeforces 1863B: Split Sort: Observe the number of pairs s.t. ai>aj and i<j return; I thought it had smth do be done with quicksort by darth_raider
- If product of roots is the constant term in a quadratic (with leading coefficient as 1), implies that "the roots of a quadratic are one of the factor-pairs of the constant term". When the constant term is integer, this is especially simple to apply. by SXZZ5
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