Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▴ Users
DMOPC '16 Contest 4 P4 - Molly and Manga Shopping DMOPC 15p 25.3% 147
COI '09 #1 Hrastovi COCI 15p 25.3% 36
APIO '11 P2 - Find the Path APIO 20p 25.3% 44
BSSPC '21 J5 - James and the Euclid Test Uncategorized 7p 25.4% 113
COCI '12 Contest 1 #3 Koncert COCI 7 25.4% 10
Mock CCO '17 Problem 1 - Fast Fuhrer Transform Mock CCO 10p 25.4% 60
Discerning Discounts Uncategorized 3p 25.4% 334
NOI '01 P1 - Food Chain China NOI 15p 25.4% 83
JOI '19 Final P3 - Collecting Stamps 3 JOI 15 25.4% 39
CCO '03 P1 - BFed CCO 10 25.4% 61
Waterloo 2023 Fall D - Reptilian Communism Waterloo Local 7 25.4% 26
CCC '96 S5 - Maximum Distance CCC 7 25.4% 417
CCO '06 P1 - CN Tower CCO 5 25.5% 141
COCI '22 Contest 2 #3 Lampice COCI 17p 25.5% 34
Triway Cup '18 Summer B - Beautiful Water Pearl Seasonal 7 25.5% 196
DWITE '09 R6 #3 - Bill Amendments DWITE 5 25.5% 11
DMPG '19 G2 - Test Marks DMOPC 20p 25.5% 3
CCC '08 S4 - Twenty-four CCC 10 25.5% 744
COCI '22 Contest 1 #5 Neboderi COCI 15p 25.5% 47
COCI '10 Contest 5 #5 Dvoniz COCI 12p 25.5% 64
Mock CCC '22 2 S1 - Kaguya Wants to Let Ishigami Pass Mock CCC 5p 25.5% 177
MWC '15 #1 P5: Love Guru MWC 7p 25.6% 369
CCO '19 P6 - Bad Codes CCO 20p 25.6% 69
CCC '10 S4 - Animal Farm CCC 15p 25.6% 529
COCI '12 Contest 2 #5 Informacije COCI 15p 25.6% 9
NOI '02 P3 - The Greedy Kuzuryū China NOI 17p 25.6% 57
VMSS Pre-Windsor P3 - Composite Bag Uncategorized 3 25.6% 214
COCI '21 Contest 2 #4 Magneti COCI 25p 25.6% 29
TLE '17 Contest 2 P2 - Unlucky Numbers TLE 5p 25.6% 406
CCC '20 S4 - Swapping Seats CCC 12p 25.6% 491
Allen's Segments Uncategorized 17 25.6% 73
COCI '09 Contest 2 #6 Pasijans COCI 15 25.6% 31
COCI '12 Contest 3 #4 Aerodrom COCI 7p 25.6% 67
COCI '21 Contest 6 #4 Palindromi COCI 25p 25.6% 7
Mock CCC '18 Contest 3 S4 - A Graph Problem Mock CCC 10 25.7% 213
CCC '11 J2 - Who Has Seen The Wind CCC 5 25.7% 1867
COCI '18 Contest 4 #3 Kisik COCI 12p 25.7% 65
Mock CCO '17 Problem 2 - Penetrating Power Mock CCO 17p 25.7% 171
Modular Multiplicative Inverse Classics 7 25.7% 234
APIO '10 P1 - Commando APIO 20p 25.7% 554
Facebook Hacker Cup '15 Round 3 P1 - Boomerang FHC 12p 25.7% 24
COCI '14 Contest 3 #5 Stogovi COCI 15p 25.7% 197
ICPC PACNW 2016 B - Buggy Robot ICPC 10 25.7% 8
ICPC NEERC 2010 D - Dome of Circus ICPC 15p 25.7% 6
COCI '09 Contest 7 #5 Kraljevi COCI 15p 25.7% 33
COCI '11 Contest 6 #5 Pastele COCI 12p 25.7% 22
Number Theoretic Transform Uncategorized 12 25.7% 11
TLE '16 Contest 4 P3 - Cubes TLE 7p 25.7% 61
Inaho VII Uncategorized 25p 25.8% 9
NOI '15 P4 - Homeric Epics China NOI 25p 25.8% 24