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Problem Category Points AC % Users ▾
Baltic OI '11 P1 - Growing Trees Baltic OI 20p 23.2% 26
COCI '21 Contest 5 #2 Dijamant COCI 10p 26.8% 26
Waterloo 2022 Fall A - Zero AAMP Currents Waterloo Local 10 62.5% 26
ETSR '23 Onsite Round 2 Problem 1 - Bracket Uncategorized 12p 8.4% 26
Waterloo 2023 Fall D - Reptilian Communism Waterloo Local 7 25.4% 26
TSOC '15 Contest 1 #2 - Special Store TSOC 7p 10.4% 25
Linked List Uncategorized 20p 7.0% 25
Mock CCO '17 Problem 6 - Dire Consequences Mock CCO 20 24.2% 25
COCI '08 Contest 2 #6 Cavli COCI 25p 14.1% 25
COCI '15 Contest 5 #2 Multigram COCI 5 39.8% 25
IOI '19 P3 - Rectangles IOI 30p 6.9% 25
CEOI '19 Practice P3 - Tower Defense CEOI 12p 13.9% 25
VPEX P3 - Coding Club Uncategorized 12p 4.7% 25
QCC P5 - Vaccine Delivery Uncategorized 12 16.2% 25
CCO '20 P3 - Mountains and Valleys CCO 35p 5.8% 25
NOI '07 P4 - Necklace Factory China NOI 20p 10.1% 25
NOI '10 P4 - Flight Control China NOI 20p 21.7% 25
MMM '14 B - Benergy Transfer Uncategorized 10 40.5% 25
Alawn's Problem Uncategorized 7 41.4% 25
WC '15 Finals S4 - Server Hacking Woburn Challenge 20p 26.8% 25
WC '99 Suicidal P1 - World Woburn Challenge 17p 16.6% 25
WC '15 Contest 3 J3 - Red Sun Simulator Woburn Challenge 10p 9.6% 25
WC '16 Contest 4 S1 - Parking Duty Woburn Challenge 10p 19.3% 25
DMOJ Capture The Flag '20 R1 - Classic Java CTF 5 69.2% 25
DMOJ Capture The Flag '20 B3 - Classic Buffer Overflow CTF 7 10.7% 25
Baltic OI '16 P4 - Cities Baltic OI 15p 32.1% 25
IOI '16 P2 - Roller Coaster Railroad (Standard I/O) IOI 35p 12.5% 25
Division Queries and Updates Uncategorized 20p 21.6% 25
COCI '11 Contest 2 #4 KompičI COCI 7p 15.6% 25
COCI '11 Contest 3 #4 Robot COCI 7 39.7% 25
COCI '11 Contest 4 #4 Ograda COCI 10p 24.5% 25
COCI '13 Contest 4 #4 Guma COCI 12p 32.6% 25
COCI '11 Contest 5 #6 Popločavanje COCI 25p 23.0% 25
BSSPC '21 S4 - Child Prodigy Chadstin Uncategorized 17p 6.7% 25
Special Relativity Uncategorized 10p 8.0% 25
NOI '21 P1 - Light Heavy Edges China NOI 25p 8.7% 25
COI '17 #1 Paprike COCI 12p 51.0% 25
April Fools' Day Contest 1 P8 - NP-Hard Uncategorized 0 5.7% 25
BPC 1 S3 - Bus Stops Uncategorized 17p 12.9% 25
Yet Another Contest 4 P5 - Signpost YAC 20p 19.5% 25
NOIP '99 P2 - Palindrome Numbers China NOI 7p 14.1% 25
Yet Another Contest 6 P5 - No More Coyotes YAC 15p 22.5% 25
CEOI '22 P3 - Prize CEOI 25p 6.5% 25
IOI '22 P2 - Prisoner Challenge IOI 25p 8.2% 25
Baltic OI '01 P1 - Postman Baltic OI 10p 18.7% 25
IOI '22 P4 - Digital Circuit IOI 25p 25.2% 25
Cheerio Contest 2 P2 - Cereal Boxes Uncategorized 3 13.1% 25
NOIP '08 P2 - Expression by Matches China NOI 10p 52.5% 25
Wesley's Anger Contest Reject 1 - Stupendous Bowties 2 WAC 17 15.5% 25
WOSS Dual Olympiad 2023 Team Round P2: Holding Eggnog Uncategorized 7 36.3% 25