頻度→三角数
問: 数列Aが与えられる。 A_i = A_j (i < j)を満たすi, jの数を求めよ
制約 |A| = 10^7, 0 < Ai < 100
Related Pages
"Engineer's way of creating knowledge" the English version of my book is now available on [Engineer's way of creating knowledge]
(C)NISHIO Hirokazu / Converted from [Scrapbox] at [Edit]