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Depth Search#4000

Ýeňil · Depth-first Search

Area of the room#4001

Ýeňil · Depth-first Search

Cheating away!#4002

Örän ýeňil · Graphs · Depth-first Search

Sum of Left Leaves#4003

Ýeňil · Trees · Depth-first Search

Is there a cycle?#4004

Örän ýeňil · Graphs · Depth-first Search

The Game of Drunkard#4005

Orta · Implementation

Delivery of kefir#4006

Örän ýeňil · Shortest paths

Numbers#4007

Örän ýeňil · Breadth-first Search

Bird tree#4009

Orta · Math · Trees · Number theory

Movie collection#4010

Örän ýeňil · Data Structures · Prefix Sums

Piece it together#4011

Örän ýeňil · Graphs

Please, go first#4012

Örän ýeňil · Greedy algorithms

Pool construction#4013

Kyn · Graph network flows · Graphs

Smoking gun#4014

Kyn · Shortest paths · Graphs · Sorting · Constructive Algorithms

Tichu#4015

Kyn · Brute force · Combinatorics · Greedy algorithms

Tracking RFIDs#4016

Orta · Geometry · Sorting · Data Structures · Binary Search

Train delays#4017

Orta · Graphs · Dynamic programming · Shortest paths

Turtle#4018

Örän ýeňil · Dynamic programming

Turtle restoring#4019

Orta · Dynamic programming

Cult-orcs on the stairs#4020

Örän ýeňil · Dynamic programming

Knight move#4021

Orta · Dynamic programming

Admiral#4022

Ýeňil · Graphs · Graph network flows

Group Pressure#4023

Ýeňil · Probabilities

Cycling#4024

Örän kyn · Greedy algorithms · Dynamic programming

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