upobir
Sabbir Rahman
Dhaka, Bangladesh
Last seen
Joined on Dec 23, 2018Problems by upobir
Array Partition Today Leena learnt about subarrays and partitions. Given an array $A$, a subarray of this array is a... |
Bi-Element Subsequence You are participating in a game show. In the final round, the host pulls up a large sequence of posi... |
Costly Array Oyler received a peculiar homework from his school. The teacher gave him a positive number $n$ and t... 
Moderate
60/90/302 |
Count the Deliveries Lazim has recently decided to open a pizza restaurant. His restaurant’s speciality is that they can ...
Moderate
13/36/122 |
Create Some Walls! Mahdi has finally found some time to build his dream house. He had been looking for some cool design... |
Dividing the Gifts Today is a very good day in CSEmpur because Tuktuki has bought N gifts! Tuktuki wants to give these ... |
GCD and Sum Congratulations! You’ve been hired in “Buggy Software Ltd.” And you’ve been already given your first... |
GCD, Divisor, Count! I like short statements and you should too so here's the statement without further ado You are give... |
Give Me My Vector I am in a hurry. I have n 2D vectors. And I have created all possible subsets of these n vectors. Fo... |
Halting Assembly Oyler is learning about assembly programming in his class. To explain jump instruction easily, his t...
Moderate
10/11/33 |
How Do You Make a Problem? I am very busy these days. So when I was told, I have to create a problem for the contest, I was sli... |
Inversions and Goodbye It's time to say goodbye to CSEmpur, at least for today. And so you wanted to give the citizens of C... |
Maximize Mismatch You are given a permutation $P$ of number $1, \cdots , n$ (I.E. each number occurs exactly once). No...
Moderate
17/18/36 |
Not Nim Alice and Bob recently learned about Nim. In a Nim game, two players play a game on several stacks o... |
Oyler's Geometric Jumps The road from Oyler’s home to his school has nsteps, where his home is at step 1 and his school is a...
Moderate
4/5/32 |
Productive Employees Congratulations on becoming the new boss of "Horizontal Company, branch: Sylhet"! But now you have a... |
Pudding and Coins Pudding is playing a game that has n levels. There are a total of n(n+1)/2 coins spread out among th... |
Random Graphs This problem is very easy. There's a graph of $N$ nodes. Each edge $u-v$ ($u >= v ; u = v$ is possib... |
Rotation Dilemma Akash has two favorite convex polygons A and B. But one of his new year resolution for 2020 is to ha... |
Shortest Path, Yet Again? Mr O is teaching Algorithms 101 to his students. The class just finished learning BFS and now he wan... |
The Answer to Everything What is the answer to the ultimate question of Life, the universe, and everything? It is You will be... |
