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Problem Category Points AC % Users ▴
NOI '19 P1 - Route China NOI 25p 12.1% 51
IOI '98 P5 - Camelot IOI 15p 40.6% 51
WC '99 P3 - The Godfather Woburn Challenge 5 28.9% 51
WC '17 Contest 2 S1 - Keeping Score Woburn Challenge 5p 33.3% 51
WC '17 Finals S2 - Cowmmunication Network Woburn Challenge 12p 27.3% 51
WC '17 Contest 3 S2 - GleamingProudChickenFunRun Woburn Challenge 12p 17.1% 51
COCI '10 Contest 4 #2 Parket COCI 5p 52.3% 51
COCI '11 Contest 5 #3 Dna COCI 10p 48.0% 51
Tropical Bananas Uncategorized 10p 43.5% 51
Bill's Binoculars Uncategorized 5 39.7% 51
MALD Contest 1 P4 - Scratch Cat and Demolition Uncategorized 15p 33.6% 51
An Animal Contest 5 P2 (Hard Version) - Permutations & Primes AAC 10 12.1% 51
Yet Another Contest 2 P4 - No More Arithmetic YAC 15p 15.1% 51
Waterloo 2022 Fall D - Course Selection Waterloo Local 5 63.5% 51
Max's Anger Contest Series 2 P4 - Number Anger Seasonal 12p 37.7% 51
New Year's '15 P5 - Message to Mars Seasonal 20p 14.4% 52
CCO '10 P5 - Space Miner CCO 15 31.5% 52
JOI '13 Open P2 - Synchronization JOI 35p 29.3% 52
MEC '16 P2 - Conveyor Belt Seasonal 5p 20.3% 52
DMOPC '15 Contest 7 P6 - A Very Very Original Problem DMOPC 20p 27.8% 52
DMPG '16 B5 - Bank Burning DMOPC 5p 12.1% 52
ICPC NAQ 2016 H - Nine Packs ICPC 10p 22.8% 52
Decoding Uncategorized 20 5.7% 52
GFSSOC '17 J5 - Choosing Extracurriculars GFSSOC 7 29.5% 52
TLE '16 Contest 7 P3 - NOR TLE 10p 31.2% 52
Mock CCO '17 Problem 4 - Guards Mock CCO 15p 17.2% 52
TLE '17 Contest 1 P4 - Tempest TLE 12p 12.3% 52
DWITE '10 R3 #2 - Unit rectangles DWITE 5 54.5% 52
DMOPC '17 Contest 5 P5 - XOR Bridges DMOPC 15p 18.7% 52
Dynamic Tree Test (Easy) Data Structure Tests 25p 34.1% 52
Triway Cup '18 Summer A - Arranged Marriage Seasonal 7 9.5% 52
VMSS Pre-Pre-Windsor P5 - Productive Math Class Uncategorized 5 13.5% 52
Please Help Me Uncategorized 15 18.1% 52
NOI '14 P5 - Random Number Generator China NOI 12p 24.3% 52
NOI '09 P5 - Pipe Marbles China NOI 25p 14.8% 52
Mock CCC '14 J4 - Selecting Shifts Mock CCC 7p 11.5% 52
Mock DWITE '09 P3 - Trailing Bears! Uncategorized 7 53.7% 52
Cheerio Contest 1 S3 - Stock Trading Uncategorized 7p 26.0% 52
Yet Another Contest 4 P3 - Canadian Cactus Competition YAC 12p 10.2% 52
NOIP '18 Junior P1 - Title Statistics China NOI 3p 66.7% 52
UACC 1 P5 - A Lab Report Uncategorized 10 14.3% 52
COCI '14 Contest 5 #5 Jabuke COCI 15p 22.6% 53
MWC '15 #2 P5: Watchmeblink1 MWC 7 36.1% 53
TLE '16 Contest 8 P3 - Fool's Sequence TLE 12p 20.5% 53
LKP '18 Contest 1 P6 - The Great Fire of Köres Uncategorized 20p 16.6% 53
DMOPC '18 Contest 4 P5 - Dr. Henri and Wormholes DMOPC 25p 18.5% 53
Another Contest 4 Problem 8 - DMOJ! ACC 0 27.3% 53
Another Contest 4 Problem 11 - Three Rectangles ACC 0 36.1% 53
GlobeX Cup '19 J3 - Codex Uncategorized 5p 16.4% 53
COCI '19 Contest 3 #2 Grudanje COCI 7p 50.0% 53