Προβλήματα

Depth Search#4000

Εύκολο · Depth-first Search

Area of the room#4001

Εύκολο · Depth-first Search

Cheating away!#4002

Πολύ εύκολο · Graphs · Depth-first Search

Sum of Left Leaves#4003

Εύκολο · Trees · Depth-first Search

Is there a cycle?#4004

Πολύ εύκολο · Graphs · Depth-first Search

The Game of Drunkard#4005

Μέτριο · Implementation

Delivery of kefir#4006

Πολύ εύκολο · Shortest paths

Numbers#4007

Πολύ εύκολο · Breadth-first Search

Binomial coefficients#4008

Εύκολο · Math

Bird tree#4009

Μέτριο · Math · Trees · Number theory

Movie collection#4010

Πολύ εύκολο · Data Structures · Prefix Sums

Piece it together#4011

Πολύ εύκολο · Graphs

Please, go first#4012

Πολύ εύκολο · Greedy algorithms

Pool construction#4013

Δύσκολο · Graph network flows · Graphs

Smoking gun#4014

Δύσκολο · Shortest paths · Graphs · Sorting · Constructive Algorithms

Tichu#4015

Δύσκολο · Brute force · Combinatorics · Greedy algorithms

Tracking RFIDs#4016

Μέτριο · Geometry · Sorting · Data Structures · Binary Search

Train delays#4017

Μέτριο · Graphs · Dynamic programming · Shortest paths

Turtle#4018

Πολύ εύκολο · Dynamic programming

Turtle restoring#4019

Μέτριο · Dynamic programming

Cult-orcs on the stairs#4020

Πολύ εύκολο · Dynamic programming

Knight move#4021

Μέτριο · Dynamic programming

Admiral#4022

Εύκολο · Graphs · Graph network flows

Group Pressure#4023

Εύκολο · Probabilities

Cycling#4024

Πολύ δύσκολο · Greedy algorithms · Dynamic programming

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