Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users
16 BIT S/W ONLY Uncategorized 3 37.0% 3217
2048 Uncategorized 15 3.9% 138
2-D Permutations Uncategorized 10p 23.4% 234
2-Dimensional Range Minimum Query Classics 17p 18.0% 175
2spooky4me Uncategorized 7 12.7% 628
Rotations in 3 Dimensions Uncategorized 12 35.3% 161
Mispelling Uncategorized 3 12.0% 1782
Mirrored Pairs Uncategorized 3 26.0% 1576
A20 Gate Uncategorized 5 31.3% 320
Triple Fat Ladies Uncategorized 5 29.6% 1903
Sorting Classics 3 46.1% 4727
AAAA 1 P1 - Even-Odd Sort Uncategorized 7p 23.9% 307
AAAA 1 P2 - Heavy-Light Composition Uncategorized 7p 29.9% 221
AAAA 1 P3 - Topographical Sort Uncategorized 12p 17.6% 149
AAAA 1 P4 - Minimex Uncategorized 17p 18.7% 68
AAAA 1 P5 - Mirror Sort Uncategorized 25p 5.1% 7
AAAA 1 P6 - The Turtle and the Rabbit Uncategorized 20p 8.0% 14
An Animal Contest 1 P1 - Alpaca Shapes AAC 3p 39.6% 3298
An Animal Contest 1 P2 - Alpaca Racing AAC 5p 7.9% 746
An Animal Contest 1 P3 - Happy Alpacas AAC 7p 20.2% 653
An Animal Contest 1 P4 - Alpaca Arrays AAC 10p 12.1% 326
An Animal Contest 1 P5 - Odd Alpacas AAC 12p 29.4% 168
An Animal Contest 1 P6 - Alpaca Distancing AAC 12p 19.9% 164
An Animal Contest 2 P0 - Koala Matchmaking AAC 3 47.8% 1528
An Animal Contest 2 P1 - Koala Konundrum AAC 5 43.5% 623
An Animal Contest 2 P2 - Koala Party AAC 5p 16.8% 358
An Animal Contest 2 P3 - Koala Balloons AAC 12p 14.9% 258
An Animal Contest 2 P4 - Koala Gambling AAC 12 21.4% 253
An Animal Contest 2 P5 - Koala Carnival AAC 15p 33.2% 121
An Animal Contest 2 P6 - Koala Transport System AAC 17p 21.8% 91
An Animal Contest 3 P1 - Monkey Shopping AAC 3 30.8% 1468
An Animal Contest 3 P2 - Monkey Potato AAC 5p 18.7% 677
An Animal Contest 3 P3 - Monkey Market AAC 7 20.9% 486
An Animal Contest 3 P4 - Monkey Mayhem AAC 7 29.4% 297
An Animal Contest 3 P5 - Monkey Canoe AAC 12p 18.2% 163
An Animal Contest 3 P6 - Monkey Station AAC 17 12.0% 53
An Animal Contest 3 P7 - Monkey Lasers AAC 25p 6.7% 15
An Animal Contest 3 P7 - Monkey Lasers (Up Version) AAC 25p 18.2% 9
An Animal Contest 3 P8 - Monkey Retirement AAC 25p 3.0% 12
An Animal Contest 4 P1 - Dasher's Digits AAC 5p 20.1% 352
An Animal Contest 4 P2 - Lavish Lights AAC 10 14.3% 264
An Animal Contest 4 P3 - Snowy Slopes AAC 10 20.8% 164
An Animal Contest 4 P4 - Reindeer Racing AAC 10p 6.2% 90
An Animal Contest 4 P6 - Cozy Cottages AAC 20 16.0% 23
An Animal Contest 5 P1 - Bamboo Cookies AAC 3p 43.5% 762
An Animal Contest 5 P2 - Permutations & Products AAC 5p 14.5% 341
An Animal Contest 5 P2 (Hard Version) - Permutations & Primes AAC 10 10.8% 61
An Animal Contest 5 P3 - Ski Resort AAC 10 12.5% 202
An Animal Contest 5 P4 - Number Game AAC 12p 8.7% 65
An Animal Contest 5 P5 - Counting Rectangles AAC 15p 11.9% 60