E. XOR and Favorite Numbertime limit per test4 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputBob has a favorite number k and 

D. Powerful arraytime limit per test5 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputAn array of positive integers a1, a2, ...

DQUERY - D-queryGiven a sequence of n numbers a1, a2, ..., an and a number of d-queries. A d-query is a pair (i, j) (1 ≤ i ≤ j ≤ n). For each d-query (i, j), you have to return the number of dis

Sherlock and InversionsAfter a long series of jobless days, Sherlock and Watson frustated by the lack of new cases, decide to turn their minds toward something interesting like solving few logic

D. Tree and Queriestime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou have a rooted tree consisting of n v