Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Types Points AC % ▾ Users
COI '08 #1 Izbori COCI Dynamic Programming 30p 8.6% 9
Baltic OI '09 P6 - Monument Baltic OI Dynamic Programming, Implementation 17 8.6% 6
UTS Open '21 P7 - April Fools Uncategorized Dynamic Programming 30p 8.6% 10
ECOO '18 R3 P2 - Vegenère ECOO Dynamic Programming, String Algorithms 12p 8.5% 6
Mock CCC '18 Contest 1 S5 - A Palindrome Problem Mock CCC Dynamic Programming 15p 8.5% 18
N-K Special Uncategorized Dynamic Programming 10p 8.4% 33
NOI '22 Multi-Provincial Team Selection P6 - MIS China NOI Dynamic Programming 40p 8.3% 2
Yet Another Contest 8 P6 - Into the Woods YAC Dynamic Programming, Graph Theory, Greedy Algorithms, Intermediate Math 20p 8.3% 14
OCC '19 S5 - Partitioning Olympiads School Dynamic Programming 12p 8.2% 12
IOI '22 P1 - Catfish Farm IOI Data Structures, Dynamic Programming 25p 8.1% 44
RGPC '18 P5 - Wormhole Uncategorized Ad Hoc, Dynamic Programming 20p 8.0% 7
CCO '23 P5 - Travelling Trader CCO Dynamic Programming, Graph Theory 30p 7.9% 17
NOI '08 P2 - Course Design China NOI Dynamic Programming, Graph Theory 30p 7.9% 12
CCC '19 S4 - Tourism CCC Dynamic Programming 20p 7.7% 248
COI '13 #1 CSS COCI Dynamic Programming, Graph Theory 20p 7.7% 8
Wesley's Anger Contest 5 Problem 5 - A Squirrel's Life WAC Dynamic Programming, Graph Theory, Intermediate Math 25p 7.6% 12
NOI '20 P4 - Dish China NOI Dynamic Programming, Greedy Algorithms 20p 7.6% 20
CCO '22 P3 - Double Attendance CCO Dynamic Programming, Graph Theory 25p 7.4% 28
GlobeX Cup '19 S5 - Alien Navigation Uncategorized Advanced Math, Dynamic Programming 20p 7.4% 16
COCI '16 Contest 5 #6 Strelice COCI Dynamic Programming 20p 7.1% 6
IOI '16 P6 - Aliens IOI Dynamic Programming 30p 7.1% 81
New Year's '19 P3 - Santa's Journey Seasonal Dynamic Programming 7 7.1% 78
Halloween '14 P4 - Fox Girls Seasonal Dynamic Programming, Graph Theory 20p 7.0% 54
NOI '19 P2 - Robot China NOI Dynamic Programming 25p 6.9% 7
TLE '16 Contest 5 P3 - Flight Exam TLE Dynamic Programming 10p 6.9% 46
Spring Coding Bowl '22 P4 - Circle Game Uncategorized Ad Hoc, Dynamic Programming, Game Theory 15p 6.7% 10
COI '12 #1 Hiperprostor COCI Dynamic Programming, Graph Theory 20p 6.7% 1
DMOPC '19 Contest 6 P5 - University Math DMOPC Data Structures, Dynamic Programming, Graph Theory 30p 6.6% 11
DMOPC '23 Contest 1 P4 - Wandering Walk DMOPC Dynamic Programming, Graph Theory 17p 6.4% 54
UTS Open '21 P6 - Terra Mater Uncategorized Data Structures, Dynamic Programming 25p 6.3% 15
NOI '09 P2 - Little G the Poet China NOI Dynamic Programming 25p 6.2% 12
DMOPC '21 Contest 6 P5 - Contraband Game DMOPC Dynamic Programming 25p 6.1% 11
NOI '15 P6 - Farm China NOI Dynamic Programming, Graph Theory 25p 6.1% 6
IOI '16 P6 - Aliens (Standard I/O) IOI Dynamic Programming 30p 6.1% 63
TLE '17 Contest 3 P4 - Meatballs TLE Dynamic Programming 12p 5.9% 17
DWITE '10 R5 #4 - New type of wordplay DWITE Dynamic Programming, String Algorithms 15 5.7% 14
NOI '10 P5 - Route Planning China NOI Dynamic Programming 35p 5.7% 2
Mock CCC '22 2 S5 - Kaguya Wants to go Window Shopping with Kei Shirogane Mock CCC Dynamic Programming 30p 5.5% 5
COCI '06 Contest 3 #5 Bicikli COCI Dynamic Programming, Graph Theory 15 5.4% 100
TLE '17 Contest 2 P6 - Save Jody! TLE Advanced Math, Dynamic Programming 25p 5.2% 6
TLE '16 Contest 6 (Mock CCC) J5 - Meal Plan TLE Dynamic Programming 10p 5.1% 13
ETSR '23 Online Round 2 Problem 4 - Queue Uncategorized Dynamic Programming 17p 5.0% 15
COCI '21 Contest 3 #3 Akcija COCI Data Structures, Dynamic Programming, Greedy Algorithms 30p 4.9% 9
DMOPC '22 Contest 3 P4 - Sketchy Cereal DMOPC Dynamic Programming 30p 4.9% 22
IOI '23 P3 - Soccer Stadium IOI Dynamic Programming 30p 4.7% 12
IOI '23 P1 - Closing Time IOI Dynamic Programming, Graph Theory, Greedy Algorithms 25p 4.6% 20
ETSR '23 Online Round 2 Problem 2 - Equation Uncategorized Dynamic Programming 15p 4.4% 35
The Contest Contest 1 P5 - A Typical CCO Problem Uncategorized Dynamic Programming, Intermediate Math 20p 4.2% 24
COCI '17 Contest 6 #6 Vrtić COCI Dynamic Programming, Graph Theory 25p 4.0% 2
COCI '10 Contest 6 #6 Voda COCI Dynamic Programming 20p 3.2% 1