shefin
Risal Shahriar Shefin
Dhaka, Bangladesh
Joined on Aug 14, 2017Problems by shefin
Binary Rhodium Xenon is a great alchemist. Recently, he has decided to perform a special type of transmutation. But... |
Chocolate There is a shop named Chocolove in the Codeland. There are many chocolates in the shop. Each chocola... |
Crypto-Number Walt and Gus have a great rivalry. Recently Gus has developed a cryptographic system. Walt is trying... |
Day-Month-Year Meena is a talented girl in her class. She likes to brainstorm in her leisure times. One day, she wa... |
Distinct List Byteland has a network of n computers that forms a tree structure. A tree is a connected graph that ... 
Moderate
2/4/4 |
Easy Prediction Alice and Bob have an array a of n integers. They decide to play a game with the array. In one move,... |
GPU-Business You are a businessman who is fond of Vinia GPU. You buy Vinia GPUs from Byteland and sell them to Bi... |
Hououin Kyouma! Okabe Rintarou, the mad scientist is doing research to find the most desired Steins Gate. Besides be... |
Is Bita Happy? Bita has learned bitwise-operations recently. She is doing some experiments with these operations no... |
Many Paths, Many Costs Alice and Bob are visiting Byteland. They are observing the map of this country. Surprisingly, the m... |
Mind Flayer Has Attacked Again! Mind flayer, the shadow monster has attacked the town of Hawkins again. This time, the mind flayer h... |
No Expectations! You have a jug and n mugs. The jug’s capacity is c liters and the ith mug’s capacity is ai liters. ...
Easy
1/7/21 |
Painful Giveaway! Shahwat is a very good problem solver. He is very famous in his city. In any problem, the mayor asks... |
Rik, the Space Traveler Mr. Rik is a famous space traveler. He lives in a galaxy named Victa. There are many planets in this... |
Subset of Master Shifu While traveling in dreamland, you've met the highly skilled master of kung fu, "Master Shifu". As yo...
Moderate
2/3/20 |
Team Forming Ben is the instructor of a camp. He is forming several teams consisting of the students of the camp.... |
The Assignment Bolt is working at a prominent company called Icefire. He has been given a task for evaluation. The ... |
The Multiplication Nafis is working on a mathematical project. But he is stuck on a step of it. In this step, numerous ... |
Watercolor Bob is the owner of a shop named "Color Maker". He has 256 types of watercolor in his shop. The type... |
XOR Tree You are given a tree with N vertices. A tree is a connected undirected graph without cycles. The tre... |
Yet Another XOR Tree Problem You are given a tree with N nodes. A non-negative weight is assigned to each edge of the tree. Let’s... |
