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Problem Category Points AC % ▾ Users
String Test Data Structure Tests 50 3.4% 2
Calendar Contest Problem 5 — Reign of Terror Uncategorized 15 3.3% 2
NOI '20 P6 - Road China NOI 45p 3.3% 1
Yet Another Contest 8 P4 - Fluke 2 YAC 15p 3.3% 43
April Fools' Day Contest 1 P7 - Half-Plane Intersection Uncategorized 0 3.2% 71
COCI '10 Contest 6 #6 Voda COCI 20p 3.2% 1
Maximum Product of K Integers Uncategorized 25 3.2% 2
2048 Uncategorized 15 3.2% 89
An Animal Contest 3 P8 - Monkey Retirement AAC 25p 3.2% 8
WC '02 Suicidal P5 - The Mines of Moria Woburn Challenge 25 3.1% 1
IOI '04 P3 - Polygon IOI 20p 3.1% 1
Piggy Seasonal 7p 3.1% 286
DMOPC '20 Contest 5 P6 - Top Row DMOPC 35p 3.1% 5
IOI '22 P6 - Thousands Islands IOI 30p 3.1% 6
CCO Preparation Test 5 P4 - Toys Mock CCO 15p 3.1% 2
IOI '23 P2 - Longest Trip IOI 25p 3.1% 13
April Fools' Day Contest 1 P6 - April Fools' Day (BOJ Edition) Uncategorized 0 3.0% 142
Mock CCC '24 Contest 1 S3 - Optimal Split Point Mock CCC 10p 3.0% 24
Ancient Castle Ruins Uncategorized 25p 2.9% 1
WC '02 P9 - A Nerd's Preparation Woburn Challenge 20p 2.9% 3
IOI '12 P1 - Pebbling Odometer IOI 30p 2.9% 4
COI '20 #4 MalnaRISC COCI 20p 2.9% 8
NOI '22 Multi-Provincial Team Selection P3 - Community China NOI 40p 2.9% 1
Mock CCC '20 Contest 1 J5 - A Prime Problem Mock CCC 12p 2.8% 20
Wesley's Anger Contest 5 Problem 7 - Acorn Delivery System WAC 30p 2.8% 7
TLE '16 Contest 7 P5 - Shortest Path Faster Algorithm TLE 20p 2.8% 10
IOI '13 P2 - Art Class (Standard I/O) IOI 20p 2.7% 90
MMM '14 G - Campfire Cooking Uncategorized 40p 2.7% 3
NOI '10 P6 - Happily Growing China NOI 50p 2.6% 2
NOI '19 P6 - Explore China NOI 25p 2.6% 10
IOI '20 P5 - Counting Mushrooms IOI 35p 2.5% 3
DMOPC '20 Contest 3 P4 - Bob and Typography DMOPC 15p 2.5% 9
Yet Another Contest 5 P4 - Nils++ YAC 17p 2.5% 7
Fast Factorial Calculator 3 Uncategorized 40 2.5% 8
Yet Another Contest 3 P3 - Topography YAC 15p 2.4% 17
NOI '05 P5 - Little H's Party China NOI 30p 2.4% 3
DMOPC '18 Contest 2 P6 - Standing Ovation (Hard Version) DMOPC 35 2.4% 1
NOI '22 P5 - Bubble Sort China NOI 35p 2.4% 1
Overflow Uncategorized 30p 2.4% 7
Mock CCC '20 Contest 2 S5 - Sticks Mock CCC 20p 2.3% 4
TLE 2018-19 P5 - Pure Functional Programming Seasonal 40p 2.3% 4
Mock CCC '19 Contest 1 S5 - Pusheen Eats Even More Tuna Sashimi and Tuna Nigiri Mock CCC 20 2.3% 9
HCI '16 - Redstone Repeaters Uncategorized 10p 2.3% 9
IOI '19 P4 - Broken Line IOI 35p 2.3% 4
Baltic OI '16 P5 - Maze Baltic OI 25p 2.3% 8
Mock CCC '23 2 S2 - Keenan Hates Triangles Mock CCC 7p 2.3% 38
WC '15 Contest 2 J4 - The Force Awakens (Junior) Woburn Challenge 15p 2.3% 11
ETSR '23 Onsite Round 2 Problem 3 - Trees Uncategorized 30p 2.2% 8
Angie and Functions (Hard) Uncategorized 30 2.1% 1
Another Contest 10 Problem 1 - Wesley's Anger Contest 7 Problem 1 - Ideology ACC 0p 2.1% 5