the i-th necklace has a brightness ai, where all the ai are pairwise distinct (i.e. all ai are different), the i-th bracelet has a brightness bi, where all the...

To become the king of Codeforces, Kuroni has to solve the following problem.

Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the max sum in this sequenc...

It is Professor R’s last class of his teaching career. Every time Professor R taught a class, he gave a special problem for the students to solve. You being his...

Emuskald is an avid horticulturist and owns the world's longest greenhouse — it is effectively infinite in length.

Dima got into number sequences. Now he's got sequence a1, a2, ..., an, consisting of n positive integers. Also, Dima has got a function f(x), which can be defin...

这个题还是不太懂，下面附上的是大佬的题解(https://zhanghuimeng.github.io/post/codeforces-1102e-monotonic-renumeration/) E. Monotonic Renumeration time limit per test2 seconds mem...

You're given a permutation aa of length nn (1 le n le 10^51≤n≤105).

It is my great honour to introduce myself to you here. My name is Aloysius Benjy Cobweb Dartagnan Egbert Felix Gaspar Humbert Ignatius Jayden Kasper Leroy Maxim...

Duha decided to have a trip to Singapore by plane.