Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users
16 BIT S/W ONLY Uncategorized 3 37.2% 3273
2048 Uncategorized 15 3.6% 116
2-D Permutations Uncategorized 10p 23.8% 240
2-Dimensional Range Minimum Query Classics 17p 17.9% 177
2spooky4me Uncategorized 7 12.9% 646
Rotations in 3 Dimensions Uncategorized 12 36.1% 169
Mispelling Uncategorized 3 12.1% 1808
Mirrored Pairs Uncategorized 3 26.1% 1629
A20 Gate Uncategorized 5 31.5% 329
Triple Fat Ladies Uncategorized 5 29.7% 1925
Sorting Classics 3 46.2% 4830
AAAA 1 P1 - Even-Odd Sort Uncategorized 7p 24.1% 332
AAAA 1 P2 - Heavy-Light Composition Uncategorized 7p 29.7% 228
AAAA 1 P3 - Topographical Sort Uncategorized 12p 17.6% 155
AAAA 1 P4 - Minimex Uncategorized 17p 19.2% 71
AAAA 1 P5 - Mirror Sort Uncategorized 25p 5.0% 8
AAAA 1 P6 - The Turtle and the Rabbit Uncategorized 20p 8.2% 15
An Animal Contest 1 P1 - Alpaca Shapes AAC 3p 39.8% 3351
An Animal Contest 1 P2 - Alpaca Racing AAC 5p 8.0% 763
An Animal Contest 1 P3 - Happy Alpacas AAC 7p 20.4% 663
An Animal Contest 1 P4 - Alpaca Arrays AAC 10p 12.2% 334
An Animal Contest 1 P5 - Odd Alpacas AAC 12p 29.6% 170
An Animal Contest 1 P6 - Alpaca Distancing AAC 12p 20.0% 166
An Animal Contest 2 P0 - Koala Matchmaking AAC 3 47.8% 1559
An Animal Contest 2 P1 - Koala Konundrum AAC 5 43.6% 633
An Animal Contest 2 P2 - Koala Party AAC 5p 16.7% 368
An Animal Contest 2 P3 - Koala Balloons AAC 12p 15.1% 262
An Animal Contest 2 P4 - Koala Gambling AAC 12 21.1% 256
An Animal Contest 2 P5 - Koala Carnival AAC 15p 33.2% 123
An Animal Contest 2 P6 - Koala Transport System AAC 17p 21.9% 98
An Animal Contest 3 P1 - Monkey Shopping AAC 3 30.9% 1500
An Animal Contest 3 P2 - Monkey Potato AAC 5p 18.8% 685
An Animal Contest 3 P3 - Monkey Market AAC 7 21.2% 496
An Animal Contest 3 P4 - Monkey Mayhem AAC 7 30.2% 305
An Animal Contest 3 P5 - Monkey Canoe AAC 12p 18.2% 163
An Animal Contest 3 P6 - Monkey Station AAC 17 11.8% 56
An Animal Contest 3 P7 - Monkey Lasers AAC 25p 7.6% 16
An Animal Contest 3 P7 - Monkey Lasers (Up Version) AAC 25p 18.2% 9
An Animal Contest 3 P8 - Monkey Retirement AAC 25p 3.1% 13
An Animal Contest 4 P1 - Dasher's Digits AAC 5p 20.5% 361
An Animal Contest 4 P2 - Lavish Lights AAC 10 14.4% 269
An Animal Contest 4 P3 - Snowy Slopes AAC 10 20.9% 166
An Animal Contest 4 P4 - Reindeer Racing AAC 10p 6.2% 91
An Animal Contest 4 P5 - Neighbourly Neighbourhoods AAC 12p 10.7% 52
An Animal Contest 4 P6 - Cozy Cottages AAC 20 16.0% 23
An Animal Contest 5 P1 - Bamboo Cookies AAC 3p 43.0% 786
An Animal Contest 5 P2 - Permutations & Products AAC 5p 14.5% 349
An Animal Contest 5 P2 (Hard Version) - Permutations & Primes AAC 10 10.8% 62
An Animal Contest 5 P3 - Ski Resort AAC 10 12.6% 205
An Animal Contest 5 P4 - Number Game AAC 12p 9.1% 67