Anina's Christmas Tree
This Christmas Anina and her friends have decided to make some Christmas trees to decorate her town....
Predict The Frequency
Luis was sleeping. He suddenly woke up with three positive integers N, M and X. He told his younger ...
Interesting Parenthesis
Parentheses sequence of length 2n is the sequence containing exactly n opening parentheses «(» and e...
Angels and Demons
You are walking at midnight along a road that has N checkpoints numbered from 1 to N from left to ri...
A Giveaway
Mr. Tom is the head of ICPC world final organizing committee. For the world final, he comes to Dhaka...
Greedy Grid Game
“Uban game world” is an indoor gaming zone. It offers 5 game segments for only one ticket. Today, Al...
Maximize Sum
You are given two integer arrays A and B of length n and m respectively. You can do the following op...
On My Way
One fine morning you discovered yourself standing in a maze. The maze can be considered a connected ...
Holy Tree
What is a tree? A tree is a bidirectional connected graph with no cycle. In a tree, we can create ...
Efficient Construction on Mars
Elon Musk has constructed N cities numbered from 0 to N−1 on Mars. He initially planned to construct...
Knapsack
You have a backpack that can carry a maximum weight of C. You will also be given a set of items, the...
DP Very Easy 73/91/225
Cash Change
You have an unlimited number of cash notes of the following denominations: 1, 5, 10, 50, 100, 500. G...
Make More Money
You, the great businessman of TEUB, arrived at ESC land which consists of N cities numbered from 1 t...
Mix and Merge
You are given an array A of n elements and a constant k. You can perform the following operation on ...
reborn DP Moderate 5/19/83
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...
Switchblade of Thanos
We all know that Thanos “The Mad Titan“ had two adopted daughters, Gamora and Nebula. But did you kn...
XOR Is Fun
Efa hates numbers. But she loves the XOR operation. This time, you have to solve another problem for...
Birthday Present?!
As everyone gifts graphs or strings to people on their birthdays, Oyshee’s friends decided to do som...
Divisible LCM
You have a sequence a1​, a2​, a3​, …, an​ of n integers and q queries. In each query, you are given ...
Misti Chor
Bhootu likes to eat misti. As he is a mischievous kid, he has decided to steal misti from the nearby...
Reverse Hash
Binary strings are strings that can only have 0 or 1 as the characters. The hash value of a string i...
This Is Business
“Why brother why…?” “This is Business …” You have started a cupcake factory where two types of cupca...
Complex Tashreef
Tashreef finally received the Zuinness Journal of Galactic records recognition for being the most co...
Without Any Legend
You have two arrays $A_1, A_2, ..., A_N$ and $C_1, C_2, ..., C_N$ of length $N$. Initially for each ...
Move It!
Few of my friends are working on a game called “Move It!”. It's a tile-based game played on an $n\ti...
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