Zeronfinity

Ash Ketchum has a weird rooted tree (read Notes sections if you don't know about tree data structure...

• Adhoc, NumberTheory
• Hard
• 1/6 Solution
• 12 Submissions

During admission exams in the city of RR (Royal Royal city), the students of RR University of Engine...

• Interactive, NumberTheory
• Hard
• 16/18 Solutions
• 70 Submissions

On the planet of Royal Royal, a university named Royal University of Engineering and Technology exis...

• ChineseRemainderTheorem, SegmentTree

One day, Nafu was whining a lot to his roommate Pika to buy Nafu some food. Nafu is famously known a...

• Hard
• 11/35 Solutions
• 204 Submissions

Being encouraged by XOR operation of binary numbers, Nanna Munna has decided to make a new kind of d...

• 1/4 Solution
• 9 Submissions

Hasinur wants to give treat. Why? Because, he's been going out with someone new. But Hasinur doesn't...

• Hard
• 9/61 Solutions
• 219 Submissions

I am trying to become a good guy, because it doesn't take money to become good. So here's a short an...

• NumberTheory
• Hard
• 6/31 Solutions
• 176 Submissions

I am trying to become a good guy, giving contestants as little pain as possible. So, this problem is...

• DivideAndConquer, NumberTheory
• Hard
• 7/20 Solutions
• 101 Submissions

Liakot, the king of Cox's Bazar, is currently in a dire situation. His own younger sister Ayesha is ...

• DataStructure
• Hard
• 5/6 Solutions
• 46 Submissions

"You are being watched. The government has a secret system: a machine that spies on you every h...

• Moderate
• 156/222 Solutions
• 603 Submissions

Tommy is an unlucky guy who used to work on the docks. He and his wife Gina are not financially stab...

• String
• Hard
• 8/14 Solutions
• 83 Submissions

Prime number seems to be trending topic for programming contest. As such, Piyash, being an aspiring ...

• Hard
• 27/52 Solutions
• 174 Submissions

Poga is a war victim who lost everyone dear to her in war. Now, she leads a team of veterans who try...

• Hard
• 4/7 Solutions
• 125 Submissions

To end the long-running feud between Superman and Goku fans regarding who's stronger, Zeron has deci...

• DP, PersistentLiChaoTree, SegmentTree
• Hard
• 3/4 Solutions
• 17 Submissions

The archipelago of Mirpur consists of N islands. The famous architect PogPog was hired to connect al...

• DisjointSets, MST, TwoPointer
• Hard
• 25/34 Solutions
• 132 Submissions

One of the biggest arguments between comic and anime fans is the topic of Superman vs Goku. Another ...

• MatrixExponentiation
• 2/2 Solutions
• 7 Submissions

To become economically stable, Saturn has come up with a new kind of business, tree business. At fir...

• NumberTheory
• Hard
• 17/59 Solutions
• 187 Submissions

Do you know Doctor Strange from Marvel? He thought he was the master of time. But one day he came to...

• Hard
• 3/14 Solutions
• 77 Submissions

Zer is a programmer who has a friend named Nir. Nir always shows off how great EEE is. One day Nir c...

• Flow
• Hard
• 9/13 Solutions
• 35 Submissions

Zoba has 3 strings, named S1, S2 and S3. He wanted to make a tough problem for Mihaf with these stri...

• DFS, Eertree
• Hard
• 11/17 Solutions
• 119 Submissions