D. Little Pony and Harmony Chest Princess Twilight went to Celestia and Luna's old castle to research the chest from the Elements of Harmony. A sequence of positive integers bi is harmony if and only if for every two elements of the sequence their…
CF453B CF454D Codeforces Round #259 (Div. 2) D Codeforces Round #259 (Div. 1) B D. Little Pony and Harmony Chest time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard output Princess Twilight went to C…