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Problem Category Points ▾ AC % Users
NOI '00 P2 - Program Parser China NOI 12p 11.5% 10
Good Celebration Uncategorized 12 13.2% 26
Bulgarian OI '09 P6 - Diamonds Bulgarian OI 12 22.9% 48
Bulgarian OI '09 P4 - Frogs Bulgarian OI 12p 24.2% 128
Bulgarian OI '09 P2 - Boxen Bulgarian OI 12 41.5% 186
IOI '95 Practice Task 3 - Bar Codes IOI 12p 35.4% 23
IOI '95 Practice Task 2 - Word Chains IOI 12 43.9% 54
IOI '96 P3 - Network of Schools IOI 12p 23.7% 83
IOI '96 P5 - Longest Prefix IOI 12 20.8% 112
IOI '98 P3 - Party Lamps IOI 12p 34.0% 168
COCI '09 Contest 4 #5 Kaboom COCI 12 40.2% 27
IOI '00 P4 - Walls IOI 12 35.8% 223
ACSL '09 Practice P5 - Fax Uncategorized 12p 29.3% 18
ICPC NEERC 2010 K - Graph Oddity ICPC 12p 28.8% 19
SMAC 08/09 (Oct) #5 - Crossroads Uncategorized 12p 25.1% 30
SMAC 08/09 (Oct) #3 - Jumpscotch Uncategorized 12p 29.5% 239
SMAC 08/09 (Nov) #4 - Infinite Degrees Uncategorized 12p 25.3% 18
CCO '05 P4 - Primed Sequences CCO 12p 12.6% 92
Meta Classics 12p 34.1% 12
A Digit Problem Uncategorized 12p 31.8% 59
COCI '09 Contest 5 #5 Program COCI 12 30.4% 96
COCI '10 Contest 1 #4 Ljutnja COCI 12p 7.9% 24
WC '99 Suicidal P3 - Message Woburn Challenge 12 42.9% 5
WC '18 Contest 3 S2 - Gym Tour Woburn Challenge 12p 41.1% 131
WC '17 Contest 4 S2 - Strange Travels Woburn Challenge 12p 40.2% 45
WC '15 Contest 4 S2 - World Tour Woburn Challenge 12p 29.2% 30
WC '18 Contest 2 S2 - Plutonium Woburn Challenge 12p 13.4% 73
WC '16 Contest 3 S2 - Training Regimen Woburn Challenge 12p 28.4% 103
WC '18 Finals S2 - Top Billing Woburn Challenge 12p 36.0% 43
WC '15 Contest 4 J4 - Target Practice Woburn Challenge 12p 28.5% 42
WC '17 Contest 2 S2 - Don't Follow the Lights Woburn Challenge 12p 40.0% 36
WC '17 Contest 2 S3 - Battle of the Pelennor Fields Woburn Challenge 12p 34.4% 30
WC '16 Contest 1 S3 - Tricky's Treats Woburn Challenge 12p 33.5% 142
WC '16 Contest 4 S2 - Pawpsicles Woburn Challenge 12p 30.6% 35
WC '01 P5 - The Man With The Golden Eye Woburn Challenge 12 16.1% 16
WC '17 Finals S2 - Cowmmunication Network Woburn Challenge 12p 27.3% 51
WC '98 P1 - Optical Recognition Woburn Challenge 12 22.2% 4
WC '16 Contest 2 S2 - Away Mission Woburn Challenge 12p 23.4% 31
WC '16 Contest 1 S4 - TP Woburn Challenge 12p 33.8% 31
WC '17 Contest 3 S2 - GleamingProudChickenFunRun Woburn Challenge 12p 17.1% 51
WC '16 Finals S3 - Privacy Woburn Challenge 12p 55.4% 75
WC '15 Contest 2 S2 - Attack of the Clones Woburn Challenge 12p 13.9% 33
WC '95 P2 - Round Numbers Woburn Challenge 12p 8.7% 38
WC '02 Suicidal P1 - Dark Lord Woburn Challenge 12 12.7% 16
CCCHK '15 S3 - Symmetric Cross CCC 12p 15.8% 19
Casino Crisis Uncategorized 12p 33.8% 56
DMOJ Capture The Flag '20 R4 - Python Cycles CTF 12 41.9% 13
Baltic OI '05 P1 - Camouflaged camp Baltic OI 12 44.8% 43
COCI '09 Contest 7 #3 Bakice COCI 12 35.5% 35
IOI '08 P1 - Type Printer IOI 12p 20.0% 408