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Problem Category Points ▴ AC % Users
NOI '12 P4 - Lost in the Park China NOI 20p 10.9% 10
NOI '13 P1 - Inner Product China NOI 20p 7.0% 20
NOI '05 P1 - The Magnificent Waltz China NOI 20p 12.9% 46
NOI '06 P6 - The Magical Bag China NOI 20p 18.8% 11
Good Inflation Uncategorized 20 15.1% 39
Boxdropper Uncategorized 20p 21.8% 19
IOI '96 P2 - Job Processing IOI 20p 29.5% 53
IOI '97 P4 - Map Labelling IOI 20p 53.2% 3
IOI '97 P3 - The Toxic iShongololo IOI 20p 47.5% 7
IOI '99 P2 - Hidden Codes IOI 20p 14.4% 10
IOI '99 P6 - A Strip of Land IOI 20p 13.4% 34
IOI '00 P6 - Building with Blocks IOI 20p 6.6% 7
IOI '03 P6 - Seeing the Boundary IOI 20p 16.2% 64
IOI '03 P5 - Amazing Robots IOI 20 11.4% 38
IOI '05 P1 - Garden IOI 20p 21.7% 252
IOI '05 Practice Task 3 - Polish Flag IOI 20p 10.6% 4
IOI '02 P2 - Utopia Divided IOI 20p 24.5% 91
ICPC NEERC 2010 B - Binary Operation ICPC 20p 20.0% 3
CCO '03 P3 - Cube CCO 20p 12.4% 14
CCO '05 P2 - The Great Spamway Strike CCO 20 40.2% 43
Kevin Needs Help Uncategorized 20 29.4% 16
And Password Uncategorized 20p 16.4% 8
COCI '10 Contest 1 #6 Žabe COCI 20p 33.3% 1
WC '17 Contest 3 S4 - Relevant Results Woburn Challenge 20p 7.8% 5
WC '97 P5 - Encoding Grid Woburn Challenge 20 6.3% 1
WC '15 Finals S4 - Server Hacking Woburn Challenge 20p 26.8% 25
WC '18 Contest 3 S4 - Holey Travels Woburn Challenge 20p 1.0% 1
WC '18 Finals S4 - Posters Woburn Challenge 20p 24.0% 6
WC '15 Contest 1 S4 - Chocolate Milk Woburn Challenge 20p 33.2% 49
WC '02 P9 - A Nerd's Preparation Woburn Challenge 20p 2.9% 3
WC '99 Suicidal P2 - Good Hunting Will Woburn Challenge 20p 0.5% 1
WC '16 Finals S4 - Bug Infestation Woburn Challenge 20p 13.7% 12
WC '97 P2 - Power of Cryptography Woburn Challenge 20 12.1% 12
WC '98 P4 - GATTACA Woburn Challenge 20p 11.6% 6
WC '15 Contest 4 S4 - Stakeout Woburn Challenge 20p 12.4% 15
WC '01 Suicidal P6 - Blind Date Woburn Challenge 20p 32.8% 10
Temple Construction Uncategorized 20p 14.5% 4
Baltic OI '19 P3 - Alpine Valley Baltic OI 20p 22.6% 56
Baltic OI '17 P2 - Toll Baltic OI 20p 47.6% 40
Baltic OI '16 P2 - Park Baltic OI 20p 51.7% 11
Security Cameras Uncategorized 20 30.8% 43
Sales Uncategorized 20p 18.4% 64
A Romantic Dinner Outing Uncategorized 20 24.0% 18
COI '09 #3 Loza COCI 20p 6.4% 18
Prime Bag Uncategorized 20p 6.9% 17
COI '09 #2 Kolo COCI 20p 17.7% 16
Baltic OI '05 P6 - Polygon Baltic OI 20 8.0% 7
Balkan OI '11 P6 - Trapezoids Balkan OI 20p 26.3% 22
IOI '11 P5 - Dancing Elephants (Standard I/O) IOI 20p 10.6% 93
Knapsack 4 ICPC 20 20.8% 57