Angels and Demons
You are walking at midnight along a road that has N checkpoints numbered from 1 to N from left to ri...
Beautiful or Not?
Rakib & Raghib are two friends. One day Rakib gave an array of numbers to Raghib and told him to mak...
Robot
There were many robots in a robotics lab. Some robots had very high IQ (IQ means task performance). ...
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...
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...
Harry and Hermione - 2
[1 and 2 are completely different problems. Consider reading both.] The monsters are back again. Har...
Crypto Gift
Professor invites his n friends on his birthday. He wants to reward all of them and make them happy....
Sofdor Ali and Attack Optimization
Tuki and Jha is in the middle of an interplanetary war and their base is under drone attack! They ar...
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 ...
N Cities
In a country there are N cities numbered from 1 to N. To Travel along the cities there are total N b...
Escape Plan
Hey, you are stuck on prison and you have to get out soon. This prison has one way road and you can ...
Yet Another Query Problem!
You are given an array $A$ of length $n$ consisting of integers between $1$ and $10^6$. You need to ...
ICPC World Final
ICPC (International Collegiate Programming Contest) World final is one of the most prestigious conte...
Bob's Dilemma
Alice and Bob have been playing a game on Android phone. It is a PVP game. They can play against eac...
A Super Easy Problem - "Array Query"
Let's get into the problem directly without much description this time :D . You are given an array A...
Help Chokro
Pias and Chokro are good friends. Pias's birthday is coming soon. So, Chokro wants to gift Pias an a...
Hououin Kyouma!
Okabe Rintarou, the mad scientist is doing research to find the most desired Steins Gate. Besides be...
Trust Me , You Can Solve It ;-)
Nafis Shahriar loves to do codeforces programming contests. He is the first candidate master in code...
Penguins of Madagascar
One day the penguins of Madagascar found a string S... Wait... Wait. Actually the setter of the prob...
Hizitizi's Array Cutting
Hizitizi is a new character in our story. In every episode, he gets a task to do from his imaginary ...
Making Football Teams
There are N football teams and each team has a positive number of players. You are given Q queries. ...
Exists or Not Exists
You will be given some numbers. Then there will contain some queries. In every query there will be g...
Escape the Planet Earth
As you know earth is affected by corona virus. Situation becomes worse day by day .Almost 80% people...
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