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Problem Category Points AC % ▴ Users
Age Demographic Uncategorized 5 19.6% 112
CCO '22 P2 - Rainy Markets CCO 17p 18.6% 104
CCO '22 P3 - Double Attendance CCO 25p 7.4% 28
NOIP '99 P2 - Palindrome Numbers China NOI 7p 14.1% 25
CCO '22 P4 - Bi-ing Lottery Treekets CCO 20p 20.5% 30
CCO '22 P5 - Phone Plans CCO 20p 12.4% 32
NOIP '99 Junior P1 - Cantor Table China NOI 5p 42.9% 15
NOIP '99 P3 - Traveller's Budget China NOI 12p 11.4% 13
NOIP '99 P1 - Missile Interception China NOI 12p 39.8% 40
NOIP '99 P4 - Stamp Face Value Design China NOI 12p 10.5% 9
Lemon Uncategorized 10 33.5% 15
A Math Contest P5 - Good Arrays Uncategorized 7p 29.6% 129
A Math Contest P11 - Weak Goldbach's Conjecture Uncategorized 15 23.9% 58
A Math Contest P2 - Subsequence Sum Uncategorized 5 29.2% 343
A Math Contest P10 - Tricky Multisets Uncategorized 12 25.7% 48
A Math Contest P7 - Factors Uncategorized 10 29.4% 130
A Math Contest P1 - Arrays Uncategorized 5 32.1% 249
A Math Contest P14 - Choosing Marbles Uncategorized 25p 21.9% 37
Adaptive Mechanized Calcium Chlorohypochlorite Uncategorized 25 15.2% 9
A Math Contest P4 - Circle Cutting Uncategorized 7 40.9% 105
A Math Contest P13 - Ways Uncategorized 17 18.9% 28
Pie Uncategorized 3 61.5% 168
A Math Contest P12 - Triangles Uncategorized 17 29.5% 20
A Math Contest P8 - Permutation Counting Uncategorized 12 35.9% 61
Fair Competition Olympiads School 5 32.7% 121
Lemon Game Olympiads School 7 28.6% 43
A Math Contest P16 - Morbius vs. Suibom Uncategorized 25 18.2% 20
APIO '22 P3 - Permutation APIO 20p 9.8% 12
Rule of Lemons Uncategorized 10 16.7% 5
A Math Contest P9 - Buy Some Get Some Uncategorized 12 27.1% 55
A Math Contest P17 - Heatwaves Uncategorized 45 36.4% 3
A Math Contest P6 - Global Maximum Uncategorized 10 28.6% 75
APIO '22 P2 - Game APIO 25p 1.9% 3
SGS Programming Challenge P4 - Toy in Psychology Class Uncategorized 17p 8.0% 14
NOIP '20 P1 - Drainage System China NOI 10p 10.6% 20
NOIP '20 P2 - String Matching China NOI 12p 13.5% 10
NOIP '20 P3 - Game of Moving Ball China NOI 15p 12.3% 6
NOI '02 P2 - Naughty Kid China NOI 15p 22.5% 14
Building Uncategorized 10p 24.5% 49
SGS Programming Challenge P3 - Tree in Biology Class Uncategorized 15p 16.5% 39
Good Sets Uncategorized 10p 27.2% 32
Baltic OI '04 P1 - Ships Baltic OI 7p 14.4% 12
DMOPC '22 Contest 1 P6 - Linear Swap DMOPC 30p 7.8% 9
Baltic OI '04 P2 - Scales Baltic OI 10p 44.4% 4
Baltic OI '04 P3 - Sequence Baltic OI 30p 30.8% 7
Baltic OI '04 P4 - Repeats Baltic OI 30p 50.0% 3
JOI '21 Open P1 - Crossing JOI 20p 42.9% 9
JOI '21 Open P2 - Financial Report JOI 25p 34.0% 13
JOI '21 Spring Camp Day 1 P1 - Aerobatics JOI 45p 0.0% 0
Baltic OI '12 P6 - Tiny Baltic OI 30p 0.0% 0