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Hot problems

Problem Category Points AC % ▴ Users
CCC '09 J4 - Signage CCC 7 29.2% 683
CCC '09 S3 - Degrees Of Separation CCC 10 28.0% 1344
CCC '09 S1 - Cool Numbers CCC 5 22.8% 2025
CCC '09 S2 - Lights Going On and Off CCC 10 40.5% 897
CCC '09 S4 - Shop and Ship CCC 10 21.1% 1028
CCC '09 S5 - Wireless CCC 12p 34.9% 620
Breaking the Friend Chain Uncategorized 7 28.9% 184
The Game of Nim Uncategorized 12p 29.5% 29
CCC '14 S4 - Tinted Glass Window CCC 15p 29.2% 672
CCC '07 S1 - Federal Voting Age CCC 3 36.2% 2318
A Times B Uncategorized 20p 15.8% 122
XOR Uncategorized 7 41.6% 347
Segment Tree Test Data Structure Tests 15p 15.6% 341
CCC '14 S5 - Lazy Fox CCC 20p 17.8% 454
CCC '13 S2 - Bridge Transport CCC 5 26.7% 2051
CCC '13 S5 - Factor Solitaire CCC 15p 42.8% 732
Pick It Uncategorized 15 49.2% 359
CCC '12 S1 - Don't pass me the ball! CCC 3 56.4% 2232
CCC '12 S2 - Aromatic Numbers CCC 5 53.3% 1705
CCC '12 S3 - Absolutely Acidic CCC 7 26.6% 1841
CCC '12 S4 - A Coin Game CCC 15 26.8% 455
CCC '12 S5 - Mouse Journey CCC 7 45.6% 1814
Python Infinite Loop Uncategorized 7p 17.3% 1874
IOI '13 P4 - Cave IOI 10p 18.6% 311
CCC '11 J5 - Unfriend CCC 7 46.8% 1003
CCC '11 S3 - Alice Through the Looking Glass CCC 10p 36.0% 1193
CCC '11 S5 - Switch CCC 12p 18.3% 412
Halloween '14 P1 - Rabbit Girls Seasonal 3p 21.3% 535
Halloween '14 P3 - Dog Girls Seasonal 15p 12.3% 76
Halloween '14 P4 - Fox Girls Seasonal 20p 7.0% 54
Binary Uncategorized 5 24.1% 886
The Torture Chamber Uncategorized 15 17.0% 239
Phantom's Python Challenge Uncategorized 40p 0.8% 10
The Cosmic Era P4 - Freedom Appears! Uncategorized 7 18.2% 143
The Cosmic Era P3 - Battle Positions Uncategorized 7 30.4% 983
DMOPC '13 Contest 1 P5 - Math on Titan DMOPC 15p 17.0% 40
DMOPC '13 Contest 1 P4 - AFK DMOPC 7p 26.0% 802
More German Nouns Uncategorized 7 9.2% 54
The Cosmic Era P1 - Ship Uncategorized 3 29.1% 1109
The Cosmic Era P2 - Uneven Sand Uncategorized 5 24.4% 897
CCC '10 S1 - Computer Purchase CCC 5 14.0% 1315
CCC '10 S2 - Huffman Encoding CCC 5 53.6% 1570
CCC '10 S3 - Firehose CCC 15p 18.2% 645
CCC '10 S4 - Animal Farm CCC 15p 25.5% 528
CCC '10 S5 - Nutrient Tree CCC 20p 19.6% 266
DMOPC '13 Contest 3 P5 - A Romantic Dinner DMOPC 10p 45.7% 387
DMOPC '13 Contest 3 P4 - Snowman DMOPC 15p 12.5% 34
DMOPC '13 Contest 3 P3 - Crossing Field DMOPC 7p 21.8% 471
DMOPC '13 Contest 3 P1 - Sharing is Caring DMOPC 5p 34.9% 306
DMOPC '13 Contest 3 P2 - Phone Microwave DMOPC 7p 27.2% 194