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Problem Category Points AC % Users ▾
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
ECOO '13 R1 P4 - Coupon Day ECOO 10p 34.7% 24
DMOPC '14 Contest 4 P5 - Aircraft Carrier Akagi DMOPC 20p 40.1% 24
Facebook Hacker Cup '15 Round 3 P1 - Boomerang FHC 12p 25.7% 24
ICPC NAQ 2016 K - Robotopia ICPC 5 18.4% 24
DMOPC '16 Contest 2 P5 - Tormented in Tartarus DMOPC 15p 8.4% 24
COCI '08 Contest 1 #4 Jez COCI 20p 23.8% 24
IOI '12 P2 - Parachute Rings IOI 25p 15.3% 24
COCI '08 Regional #4 Tablica COCI 15 34.1% 24
DWITE '10 R3 #1 - Integers along a line DWITE 5 21.7% 24
Triway Cup '18 Summer H - Heavy Souls Seasonal 15 29.6% 24
COCI '13 Contest 2 #5 Paleta COCI 15p 11.0% 24
COCI '18 Contest 5 #5 Transport COCI 25p 24.8% 24
COCI '06 Regional #4 Circle COCI 15 36.7% 24
Baltic OI '06 P2 - Coin Collector Baltic OI 12 19.0% 24
NOI '00 P5 - Frogs Crossing the River China NOI 10p 29.7% 24
Good Code Uncategorized 15 12.3% 24
NOI '07 P2 - Cash Exchange China NOI 30p 12.1% 24
NOI '06 P1 - Network Charges China NOI 20p 25.8% 24
NOI '11 P3 - Ali's Typewriter China NOI 30p 29.9% 24
COCI '09 Contest 4 #6 Palacinke COCI 15 41.0% 24
COCI '10 Contest 1 #4 Ljutnja COCI 12p 7.9% 24
WC '01 P1 - The Rock Woburn Challenge 7 77.2% 24
COCI '20 Contest 2 #3 Euklid COCI 17p 19.6% 24
COCI '10 Contest 2 #3 Igra COCI 7p 21.0% 24
COCI '16 Contest 2 #6 Burza COCI 30p 22.0% 24
COCI '13 Contest 3 #2 Okvir COCI 5p 61.4% 24
COCI '12 Contest 2 #3 Lanci COCI 7p 35.3% 24
DMOPC '20 Contest 6 P5 - Jennifer's Math Mystery DMOPC 17p 11.8% 24
DMOPC '20 Contest 4 P6 - Petty Children DMOPC 25p 20.8% 24
Monkey Bread Uncategorized 7 27.3% 24
NOI '15 P4 - Homeric Epics China NOI 25p 25.8% 24
Persuasion Uncategorized 12 29.7% 24
Fixing Shirts Uncategorized 15 18.4% 24
Expected Inversions Uncategorized 12p 33.1% 24
DMOPC '21 Contest 5 P5 - Permutations & Primes DMOPC 30p 10.9% 24
COCI '21 Contest 4 #5 Šarenlist COCI 17p 30.0% 24
COI '12 #4 Spijuni COCI 10p 30.4% 24
JOI '22 Final P1 - Intercastellar JOI 10p 56.3% 24
Baltic OI '01 P6 - Teleports Baltic OI 10p 37.8% 24
ETSR '23 Onsite Round 1 Problem 2 - Origami Uncategorized 15p 21.0% 24
COCI '23 Contest 1 #4 Kocke COCI 15p 23.0% 24
Amplitude Hackathon '23 Practice Problem 3 - Demo Day Demos Uncategorized 5p 31.8% 24
The Contest Contest 1 P5 - A Typical CCO Problem Uncategorized 20p 4.2% 24
Mock CCC '24 Contest 1 S3 - Optimal Split Point Mock CCC 10p 3.0% 24
New Year's '16 P5 - Eggnog Dilemma Seasonal 12p 5.4% 23