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Problem Category Points AC % ▾ Users
Mock CCC '19 Contest 2 S3 - Tudor Tallies Triangular Totals Mock CCC 10p 5.4% 62
New Year's '18 P5 - Hanoi Heuristics Seasonal 15p 5.4% 9
New Year's '16 P5 - Eggnog Dilemma Seasonal 12p 5.4% 23
COCI '15 Contest 5 #5 OOP COCI 20p 5.4% 9
COCI '17 Contest 4 #6 Ceste COCI 25p 5.4% 7
CCO '06 P4 - CN Tower 2 CCO 30 5.4% 11
COCI '06 Contest 3 #5 Bicikli COCI 15 5.4% 100
CCC '02 J1 - 0123456789 CCC 3 5.4% 722
DS '19 Day 1 P1 - Arithmetic Square Seasonal 20p 5.4% 1
DMOPC '22 Contest 4 P6 - K-Sort DMOPC 30p 5.4% 5
TLE 2018-19 P1 - Hello, World! Seasonal 20p 5.3% 22
NOI '99 P6 - Memory Allocation China NOI 20p 5.3% 7
Carving Tiny Fractions Uncategorized 25p 5.3% 4
HCI '16 - Wizardry Uncategorized 7 5.3% 17
DMOPC '18 Contest 5 P6 - An XOR Problem DMOPC 25p 5.3% 5
Another Small Favour Uncategorized 15p 5.3% 9
Baltic OI '14 P4 - Demarcation Baltic OI 40p 5.3% 1
TLE '17 Contest 2 P6 - Save Jody! TLE 25p 5.2% 6
Mock CCC '19 Contest 1 S3 - Pusheen Eats Tuna Sashimi and Tuna Nigiri Mock CCC 12p 5.2% 54
JOI '18 Open P1 - Bubble Sort 2 JOI 20p 5.2% 26
ICPC ECNA 2000 A - Picnic Planning ICPC 15 5.2% 4
Dream and the Multiverse Uncategorized 50p 5.2% 2
CCC '06 S2 - Attack of the CipherTexts CCC 5 5.2% 238
ETSR '23 Online Round 2 Problem 3 - Stone Game Uncategorized 15p 5.2% 44
IOI '19 P2 - Split the Attractions IOI 40p 5.1% 26
NOIP '22 P2 - Meow Meow China NOI 20p 5.1% 8
TLE '16 Contest 6 (Mock CCC) J5 - Meal Plan TLE 10p 5.1% 13
ETSR '23 Online Round 2 Problem 4 - Queue Uncategorized 17p 5.0% 15
Bohemian Rhaksody Uncategorized 45p 5.0% 10
IOI '22 P5 - Rarest Insects IOI 30p 5.0% 21
Bubble Cup V9 B Underfail Bubble Cup 20 5.0% 2
CCCHK '15 S5 - Can I pass the courses? CCC 25p 5.0% 6
EGOI '22 P6 - Superpiece EGOI 20p 5.0% 8
NOIP '20 P4 - WeRun China NOI 20p 5.0% 2
Yet Another Contest 8 P5 - Hidden Tree YAC 20p 5.0% 10
IOI '23 P4 - Beech Tree IOI 35p 4.9% 3
COCI '21 Contest 3 #3 Akcija COCI 30p 4.9% 9
CCCHK '15 S2 - Matching Problem CCC 10p 4.9% 14
DMOPC '22 Contest 3 P4 - Sketchy Cereal DMOPC 30p 4.9% 22
ETSR '23 Onsite Round 1 Problem 3 - Travel Uncategorized 17p 4.8% 20
AQT's Tree Game Uncategorized 30 4.8% 14
Another Contest 6 Problem 0 - Another Warmup Problem ACC 0 4.8% 8
GFSSOC '17 S3 - Zhany Zhanbies GFSSOC 12 4.8% 14
IOI '21 P3 - Fountain Parks IOI 30p 4.8% 7
WC '16 Contest 3 S3 - Puzzle Rooms Woburn Challenge 15p 4.7% 6
VPEX P3 - Coding Club Uncategorized 12p 4.7% 25
CCO '21 P6 - Loop Town CCO 50p 4.7% 13
IOI '23 P3 - Soccer Stadium IOI 30p 4.7% 12
IOI '23 P1 - Closing Time IOI 25p 4.6% 20
CCO '04 P3 - S and K CCO 15p 4.5% 6