Problem Archive

2026-10-12

Forbidden Subsequence

Intermediate1100

Binary Cut

The Fair Nut and Strings

Capitalism

2026-10-11

Fafa and the Gates

Intermediate1200

Points on the line

Yet Another Subarray Problem

Getting Deals Done

2026-10-10

I love AAAB

Intermediate1400

Arboris Contractio

Transmigration

Passports

2026-10-09

NIT Destroys the Universe

Intermediate1300

Creating a Character

As Fast As Possible

Dog Snacks

2026-10-08

Планеты

Intermediate1400

Соседний XOR

Мобильная связь

Хорошие подотрезки

2026-10-07

Odd One Out

Intermediate1200

Switches and Lamps

Toy Train

Abandoning Roads

2026-10-06

Crazy Computer

Intermediate1500

Turtle vs. Rabbit Race: Optimal Trainings

Multicolored Cars

Light Bulbs (Easy Version)

2026-10-05

Extremely Round

Intermediate1500

Division and Union

Manipulating History

The Hero with Bombs

2026-10-04

Colourblindness

Intermediate1100

Slavic's Exam

Rorororobot

Partial Sorting

2026-10-03

Clock and Strings

Intermediate1300

Pacifist frogs

Fake Plastic Trees

Shop

2026-10-02

Construct a Rectangle

Intermediate1300

Range Operation

Tree XOR

Groceries in Meteor Town

2026-10-01

MEX Partition

Intermediate1300

Registration System

Binary Search

Replace on Segment

2026-09-30

Bachgold Problem

Intermediate1400

Berstagram

A Growing Tree

Little Elephant and Shifts

2026-09-29

Stable Arrangement of Rooks

Intermediate1100

Mr. Kitayuta's Gift

Local Construction

You Are Given Some Letters...

2026-09-28

Mathematical Circus

Intermediate1300

Find the Different Ones!

Infinite Fence

Chaotic Merge

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