Palindrome and Queries
You'll be given an array A of N strings containing lowercase English letters only and Q queries. In ...
Hello Choto Bondhu!
Let's play a game. I will give you a number n. You will have to tell me n2. Okay, it may seem diffic...
Circle of Death
Abir is a school going boy, who loves math. Also, he loves to play with stones. Recently he invented...
Match the Substring
String Matching is an important problem in computer science research and finds applications in data ...
Quarantine!!!
China is one of the strongest countries in the world in the sense of economy and military technology...
The Mughal Emperor
You all must’ve heard the name of the emperor Humayun Mirza. He was a very kind human being. But thi...
Eeny Meeny
'Eeny meeny miny moe' is a well-known nursery rhyme in English, used (among other things) by kids to...
Dinner With Aminvai
Aminvai is a famous programmer of the world. He has a lot of fans & followers. Unfortunately, he has...
Weather Report
Santu is a newcomer in Rangpur. He is having trouble adjusting with the strange weather of Rangpur. ...
Rename the Books
Everything is short in the Short Land. People use short words when talking to each other or writing ...
Mushrur Injured in Singara Blast
Mashrur Hossain, a programmer, came to Bot-toli from GEC yesterday to attend an event organized by t...
Playing With Aladdin
Aladdin is a fictional character and the titular protagonist of Walt Disney Pictures' 31st animated ...
PUBG Lover Programmer: The Beginning
Sroud loves to play PUBG and does programming contest. He always thinks about converting gameplay to...
Tic Toc Toe
We all know what Tic-Toc-Toe works. But in the anime world, people aren't really interested in norma...
NAC-SAC Game! (Easy)
Akash and Guru are playing an interesting game. They are standing at the two ends of the NAC-SAC bri...
Ashik's Trouble
Ashik is generally a good boy. But recently he has had some trouble with one of his classmates. His ...
Code Generator
Disha has a string $S$. In one second, Disha can choose a subsequence from $S$ that make the word “c...
Next Permutation
A sequence of $N$ distinct integers is called a permutation if all the integers are between $1$ and ...
Karim Meets Gollum
After hearing about Bilbo's Ring that he found in the Misty Mountains, Karim the Hobbit decided to e...
Array Partition
Today Leena learnt about subarrays and partitions. Given an array $A$, a subarray of this array is a...
Hououin Kyouma!
Okabe Rintarou, the mad scientist is doing research to find the most desired Steins Gate. Besides be...
Butcher of Vowels
...if I'm to choose between one evil and another, then I prefer not to choose at all. -- Geralt (Th...
Trust Me , You Can Solve It ;-)
Nafis Shahriar loves to do codeforces programming contests. He is the first candidate master in code...
Tricky Racer
Talent Bob is a galaxy wide known legend and a racer (in game :P). He always wins races by his trick...
Jontrona!
Isfan vai is on high demand nowadays. You know why, right? However, his best friend is somewhat disa...
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