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Problem Category Points AC % Users ▾
DMOPC '19 Contest 4 P6 - little_prince's Specialty Tea House DMOPC 25p 5.8% 16
GlobeX Cup '19 S5 - Alien Navigation Uncategorized 20p 7.4% 16
JSB '19 - P2 CTF 7 26.7% 16
DMOPC '19 Contest 4 P4 - Math Class DMOPC 15p 3.4% 16
PIB '20 P7 - Karnaugh Maps Uncategorized 15p 8.5% 16
Grid 3 Uncategorized 20 38.5% 16
WC '18 Contest 1 S4 - Bad Influence Woburn Challenge 15p 12.4% 16
NOI '11 P5 - NOI Carnival China NOI 25p 19.5% 16
IOI '99 P5 - Flatten IOI 15p 21.8% 16
Kevin Needs Help Uncategorized 20 29.4% 16
NOI '19 P5 - Landlords China NOI 25p 22.6% 16
WC '01 P5 - The Man With The Golden Eye Woburn Challenge 12 16.1% 16
WC '02 Suicidal P1 - Dark Lord Woburn Challenge 12 12.7% 16
Baltic OI '20 P3 - Joker Baltic OI 25p 14.9% 16
What a Niche Uncategorized 10p 13.3% 16
COI '09 #2 Kolo COCI 20p 17.7% 16
ICPC SWERC 2017 J - Frosting on the Cake ICPC 7 41.7% 16
World Tour Contest Problem 1 — Solar Eclipse Seasonal 5 1.6% 16
COCI '13 Contest 3 #5 Parovi COCI 12p 46.7% 16
COCI '17 Contest 3 #4 Portal COCI 12p 53.4% 16
COCI '12 Contest 6 #4 Burek COCI 12p 27.7% 16
ICPC NWERC 2011 A - Binomial Coefficients ICPC 10 24.7% 16
Dynamic Sum Uncategorized 15 14.6% 16
String Finding - Hacking Uncategorized 10 6.1% 16
COCI '21 Contest 2 #3 Hiperkocka COCI 20p 23.3% 16
Baltic OI '14 P5 - Portals Baltic OI 15p 23.4% 16
Baltic OI '02 P1 - Speed Limits Baltic OI 12p 26.3% 16
Bit Combinations Uncategorized 7 33.3% 16
IOI '12 P6 - Jousting Tournament IOI 17p 16.4% 16
JOI '22 Final P2 - Self Study JOI 12p 25.7% 16
Waterloo 2022 Fall C - Squaring the Triangle Waterloo Local 17 41.2% 16
EGOI '22 P3 - Social Engineering EGOI 15p 7.1% 16
Lyndon's Golf Contest 1 P5 - Basic Triangle Uncategorized 0p 2.2% 16
COCI '22 Contest 1 #3 Berilij COCI 17p 16.4% 16
NOIP '08 P3 - Message Passing China NOI 15p 42.9% 16
Cheerio Contest 3 P5 - Train Network Uncategorized 20p 3.8% 16
ETSR '23 Onsite Round 1 Problem 1 - Arithmetic Uncategorized 20p 4.3% 16
Amplitude Hackathon '23 Problem 4 - Frequency Queries Uncategorized 7p 15.3% 16
WOSS Dual Olympiad 2023 S3: Flying Uncategorized 15p 23.3% 16
COCI '23 Contest 2 #3 Dizalo COCI 17p 19.1% 16
MEC '16 P6 - Instruments of the Ghostwriters Seasonal 10p 11.3% 15
ECOO '16 R3 P2 - Target Practice ECOO 10p 22.2% 15
IOI '16 P3 - Shortcut IOI 40p 9.0% 15
ICPC ECNA 2005 G - Swamp Things ICPC 7 22.6% 15
ECOO '13 R3 P1 - Irregular Expressions ECOO 5p 20.5% 15
DMOPC '17 Contest 3 P6 - Mimi and Scarf DMOPC 25p 7.3% 15
CTU Open Contest 2017 - Punching Power ICPC 15 46.3% 15
DMOPC '18 Contest 2 P6 - Standing Ovation DMOPC 30p 16.5% 15
OCC '19 B4 - Bussing Olympiads School 5 22.1% 15
Angie and Functions Uncategorized 20p 23.6% 15