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https://www.acmicpc.net/problem/15439 15439번: Vera and Outfits Vera owns N tops and N pants. The i-th top and i-th pants have colour i, for 1 ≤ i ≤ N, where all N colours are different from each other. An outfit consists of one top and one pants. Vera likes outfits where the top and pants are not the same colour. www.acmicpc.net 수능 2등급 맞았던 실력으로 쉽게 해석하면 1줄 요약이 가능하다 ~~ 바로 베라는 N개의 하의와 바지가 있는데 색은 다 ..