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Problem Category Points ▴ AC % Users
NOIP '18 P5 - Grid-filling Game China NOI 20p 15.4% 5
NOIP '21 P2 - Sequence China NOI 20p 28.7% 62
NOIP '21 P3 - Variance China NOI 20p 12.6% 39
NOIP '21 P4 - Chess China NOI 20p 20.8% 7
Baltic OI '09 P5 - Triangulation Baltic OI 20p 36.5% 9
COCI '21 Contest 2 #3 Hiperkocka COCI 20p 23.3% 16
COCI '21 Contest 2 #5 Osumnjičeni COCI 20p 24.2% 49
DMOPC '21 Contest 4 P5 - Graph Generator DMOPC 20p 16.0% 17
Baltic OI '08 P3 - Magical Stones Baltic OI 20p 0.0% 0
CCO '05 P3 - That's News To Me CCO 20 0.0% 0
Yet Another Contest 1 P6 - Alchemy YAC 20p 15.8% 14
An Animal Contest 6 P5 - Rock Painting AAC 20p 12.3% 18
Baltic OI '11 P1 - Growing Trees Baltic OI 20p 23.2% 26
Wesley's Anger Contest 6 Problem 6 (Hard Version) - Santa's Candy Factory WAC 20p 5.8% 17
COCI '09 Contest 7 #6 Restoran COCI 20p 16.4% 4
An Animal Contest 6 P4 - Buffet AAC 20p 7.3% 29
COI '19 #3 Semafor COCI 20p 16.7% 1
COI '17 #2 Pick COCI 20p 0.0% 0
Baltic OI '15 P1 - Bowling Baltic OI 20p 50.0% 3
Yet Another Contest 2 P6 - Travel Budget YAC 20p 15.0% 37
COCI '21 Contest 5 #5 Usmjeravanje COCI 20p 19.4% 14
COI '13 #1 CSS COCI 20p 7.7% 8
Baltic OI '15 P4 - File Paths Baltic OI 20p 53.3% 4
Baltic OI '15 P6 - Tug of War Baltic OI 20p 11.1% 4
COI '11 #1 Kampanja COCI 20p 26.8% 20
COI '12 #1 Hiperprostor COCI 20p 6.7% 1
COI '13 #4 Nizovi COCI 20p 10.2% 11
DMOPC '21 Contest 9 P5 - Chika Circle DMOPC 20p 11.7% 25
DMOPC '21 Contest 9 P4 - Ace of Diamonds DMOPC 20p 19.9% 43
Yet Another Contest 4 P4 - Even The Odds YAC 20p 3.9% 12
Yet Another Contest 4 P6 - No More Solitaire YAC 20p 6.7% 24
Yet Another Contest 4 P5 - Signpost YAC 20p 19.5% 25
CCO '22 P4 - Bi-ing Lottery Treekets CCO 20p 19.0% 30
CCO '22 P5 - Phone Plans CCO 20p 12.8% 33
A Math Contest P15 - Matrix Fixed Point Uncategorized 20 68.3% 30
APIO '22 P3 - Permutation APIO 20p 9.8% 12
DMOPC '21 Contest 10 P5 - Number Theory DMOPC 20p 43.5% 145
IOI '18 P4 - Mechanical Doll IOI 20p 22.6% 13
An Animal Contest 7 P4 - Squirrel Shenanigans AAC 20 19.2% 17
An Animal Contest 7 P6 - S-Squirrel? AAC 20p 11.4% 7
JOI '21 Open P1 - Crossing JOI 20p 42.9% 9
JOI '20 Open P1 - Furniture JOI 20p 35.0% 7
CEOI '22 P1 - Abracadabra CEOI 20p 20.6% 41
CEOI '22 P5 - Measures CEOI 20p 9.5% 28
Lemon Tree Uncategorized 20p 10.5% 14
Baltic OI '01 P3 - Box of Mirrors Baltic OI 20p 12.5% 7
Baltic OI '01 P2 - Crack the Code Baltic OI 20p 8.3% 1
NOI '16 P1 - Good Partitions China NOI 20p 7.8% 5
NOI '16 P4 - Interval China NOI 20p 21.4% 24
NOI '16 P5 - Drinking Water China NOI 20p 0.7% 1