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Problem Category Points AC % ▾ Users
ECOO '14 R3 P1 - Substitute Teacher ECOO 5p 46.7% 21
CCO '97 P5 - Space Aliens CCO 10 46.7% 3
CCO '98 P6 - Derek's Dilemma CCO 12 46.7% 4
COCI '17 Contest 7 #4 Clickbait COCI 15p 46.7% 6
COCI '13 Contest 3 #5 Parovi COCI 12p 46.7% 16
COCI '11 Contest 5 #1 Križaljka COCI 3p 46.7% 54
Checkerboard Summation (Hard) Uncategorized 15p 46.6% 242
IOI '03 Practice Task 1 - Balancing Act IOI 15 46.6% 125
GlobeX Cup '18 S Sample - Chair Stacking Uncategorized 7p 46.6% 127
COCI '14 Contest 5 #3 Traktor COCI 7p 46.6% 278
DWITE '09 R2 #1 - Angles DWITE 5 46.6% 18
COCI '09 Contest 5 #4 Zuma COCI 15 46.5% 71
CCC '06 S4 - Groups CCC 10 46.5% 326
ECOO '20 P2 - Online Shopping ECOO 5p 46.5% 368
ICPC ECNA 2016 C - The Key to Cryptography ICPC 7 46.4% 61
Waterloo 2017 Fall A - Art Waterloo Local 3p 46.4% 108
COCI '08 Regional #6 Cvjetici COCI 12 46.4% 179
NOI '08 P3 - Hiring Employees China NOI 25p 46.4% 41
Cheerio Contest 1 S5 - Coin Game Uncategorized 15p 46.4% 35
IOI '09 P5 - Garage IOI 7 46.4% 530
TSOC '15 Contest 2 #5 - Bebiliths TSOC 5p 46.4% 209
DWITE '10 R3 #3 - Dominos Tiling DWITE 10 46.3% 266
Waterloo 2017 Winter D - Vera and Sorting Waterloo Local 15 46.3% 29
CTU Open Contest 2017 - Punching Power ICPC 15 46.3% 15
DWITE '11 R5 #4 - Cube World DWITE 12 46.3% 70
DWITE '09 R5 #4 - Kind of like OCR DWITE 7 46.3% 18
Tree Paths Uncategorized 12p 46.3% 9
CTU Open Contest 2017 - Ice Cream Samples ICPC 12 46.2% 5
CTU Open Contest 2017 - Go Northwest! ICPC 7 46.2% 9
DMOPC '18 Contest 3 P1 - Bob and Music Class DMOPC 5 46.2% 101
COCI '13 Contest 6 #4 Kružnice COCI 12p 46.2% 14
COI '12 #3 Snjeguljica COCI 17p 46.2% 21
Google Code Jam '21 Qualification Round Problem B - Moons and Umbrellas Google Code Jam 7p 46.2% 6
CCC '19 J3 - Cold Compress CCC 5 46.1% 3151
VMSS Pre-Pre-Windsor P2 - Big Chess Uncategorized 3 46.1% 415
COCI '14 Contest 7 #1 Teta COCI 5p 46.1% 99
COCI '23 Contest 2 #2 Pingvin COCI 7p 46.1% 36
DWITE '09 R3 #1 - Quiz Time DWITE 3 46.1% 97
COCI '08 Contest 2 #1 Kornislav COCI 5 46.1% 398
CCC '19 S1 - Flipper CCC 3p 46.1% 3948
COCI '08 Contest 4 #2 Datum COCI 3 46.0% 323
An Extraordinarily Coordinated Christmas Uncategorized 10p 46.0% 105
COCI '20 Contest 3 #2 Vlak COCI 10p 46.0% 49
Facebook Hacker Cup '15 Round 1 P4 - Corporate Gifting FHC 17 46.0% 88
ECOO '15 R3 P1 - Just the Factoradics, Ma'am ECOO 7p 46.0% 35
Lexicographically Least Substring Uncategorized 5 46.0% 616
DMOPC '14 Exam Time P2 - Physics Duel DMOPC 5p 46.0% 125
DWITE '08 R5 #3 - Working Directory DWITE 7 45.9% 16
Baltic OI '15 P2 - Editor Baltic OI 25p 45.9% 9
CCC '97 S2 - Nasty Numbers CCC 5 45.9% 794