Bob's Dilemma
Alice and Bob have been playing a game on Android phone. It is a PVP game. They can play against eac...
ICPC World Final
ICPC (International Collegiate Programming Contest) World final is one of the most prestigious conte...
Optimarble!
You might be familiar with marbles from childhood having beautiful memories playing with them. For t...
Min Value
You are given an array of N integers and q queries. In each query you are given an integer value x. ...
Nearest Light
We, iuian develop a virtual vertical line with infinite length are numbered starting from zero from ...
Do You Know LIS?
Alam has an array a with n elements a1​,a2​,…,an​ and an integer x. For each i (1≤i≤n−1) index i and...
Crypto Gift
Professor invites his n friends on his birthday. He wants to reward all of them and make them happy....
Harry and Hermione - 2
[1 and 2 are completely different problems. Consider reading both.] The monsters are back again. Har...
Inspired by Bermuda Triangle
Do you know about Bermuda Triangle? The Bermuda Triangle is a mythical section of the Atlantic Ocean...
Help IKRI
Ikri has a binary string s of length n. (each character of s is either 0 or 1) The weight of the bin...
Robot
There were many robots in a robotics lab. Some robots had very high IQ (IQ means task performance). ...
Beautiful or Not?
Rakib & Raghib are two friends. One day Rakib gave an array of numbers to Raghib and told him to mak...
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