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Problem Category Points ▾ AC % Users
COCI '21 Contest 5 #1 Kemija COCI 7p 39.0% 97
DMOPC '21 Contest 7 P2 - Knitting Scarves DMOPC 7 24.3% 184
Intertwined Strings Uncategorized 7p 42.5% 143
Magic Sequence Olympiads School 7p 64.9% 92
A Math Contest P3 - LIS Reconstruction Uncategorized 7 47.0% 160
Cheerio Contest 1 S3 - Stock Trading Uncategorized 7p 26.0% 52
Another Random Contest 1 P3 - Physics Olympics Uncategorized 7p 31.3% 32
Another Random Contest 1 P2 - Two Sequences Uncategorized 7p 18.9% 43
DMOPC '21 Contest 8 P1 - Peanut Planning DMOPC 7p 19.7% 212
DMOPC '21 Contest 9 P2 - String Puzzle DMOPC 7p 24.7% 152
DMOPC '21 Contest 9 P1 - Board Numbers DMOPC 7p 17.5% 179
COCI '17 Contest 1 #3 Lozinke Hard COCI 7 25.4% 53
SAC '22 Code Challenge 5 Junior P4 - Course Requirements SAC Coding Challenge 7p 52.8% 239
Yet Another Contest 4 P2 - Alchemy 2 YAC 7p 26.3% 164
Cheerio Contest 1 S2 - School Expansion Uncategorized 7p 31.0% 101
NOIP '99 P2 - Palindrome Numbers China NOI 7p 14.1% 25
A Math Contest P5 - Good Arrays Uncategorized 7p 29.5% 128
Yet Another Contest 6 P2 - No More Telemarketers YAC 7p 16.7% 128
A Math Contest P4 - Circle Cutting Uncategorized 7 40.9% 105
Lemon Game Olympiads School 7 28.6% 43
DMOPC '21 Contest 10 P2 - Cycle Sort DMOPC 7p 11.3% 149
Baltic OI '11 P6 - Plagiarism Baltic OI 7p 27.4% 38
Baltic OI '14 P2 - Three Friends Baltic OI 7p 19.3% 45
Baltic OI '06 P6 - Jump Baltic OI 7p 15.3% 22
Another Contest 9 Problem 2 - Counting Down the Days ACC 7 6.9% 61
Baltic OI '04 P1 - Ships Baltic OI 7p 14.4% 12
An Animal Contest 7 P2 - Squirrel Structures AAC 7p 15.2% 138
Bit Combinations Uncategorized 7 34.8% 16
NOIP '18 Junior P2 - The Big Battle China NOI 7p 33.3% 13
BSSPC '22 P5 - Derrick and Orz Trees Uncategorized 7p 19.4% 140
Purple Lemon Uncategorized 7p 21.4% 17
Yet Another Contest 5 P1 - Number Pyramid YAC 7p 18.9% 186
SGS Programming Challenge P1 - XOR in Computer Class Uncategorized 7p 13.3% 156
MCIPC Contest 1 P5 - Rainwater Uncategorized 7 23.0% 17
MCIPC Contest 1 P4 - Snack Line Uncategorized 7p 14.5% 14
Cheerio Contest 2 P5 - Subsequence Queries Uncategorized 7p 26.5% 23
Cheerio Contest 2 P4 - Modulus Finding Uncategorized 7p 14.5% 18
Max's Anger Contest Series 1 P3 - Divide and Connor Seasonal 7 23.8% 205
Yet Another Contest 8 P2 - No More Modern Art YAC 7p 27.2% 244
MCIPC Contest 2 P4 - Wreath Uncategorized 7p 9.6% 8
DMOPC '22 Contest 2 P2 - Line Trace DMOPC 7p 34.1% 167
WOSS Dual Olympiad 2022 S2: Festive Card Game Seasonal 7p 19.8% 62
WOSS Dual Olympiad 2022 J4: Fire on Christmas Day Seasonal 7p 13.7% 34
EGOI '21 P1 - Zeros EGOI 7p 20.7% 70
Mock CCC '23 2 S2 - Keenan Hates Triangles Mock CCC 7p 2.3% 38
COCI '22 Contest 3 #2 Dirigent COCI 7p 28.2% 84
CCC '23 S2 - Symmetric Mountains CCC 7p 26.6% 809
Max's Anger Contest Series 2 P3 - Array Anger Seasonal 7p 42.9% 153
Google Code Jam '08 Qualification Round Problem C - Train Timetable Google Code Jam 7p 50.0% 4
Google Code Jam '08 Round 1A Problem B - Milkshakes Google Code Jam 7p 66.7% 2