Problems

 RSS feed for new problems
Submissions Users
Name Total Acc. Ratio   Fastest Total Acc. Ratio Difficulty
Hopper 1270 18 1% 0.32 120 9 8% 9.6
Histogrami 106 2 2% 0.10 8 2 25% 8.5
Between Dark and Dawn 47 1 2% 0.04 8 1 12% 8.5
Spaghetti 38 1 3% 0.25 3 1 33% 6.1
Russian Dolls 1242 34 3% 0.00 66 25 38% 8.5
Magical Mystery Knight's Tour 1475 45 3% 0.00 122 26 21% 9.6
Text Processor 799 25 3% 0.03 173 16 9% 9.3
Drive Safely 707 28 4% 0.01 58 19 33% 9.4
Poslozi 75 3 4% 5.66 10 3 30% 8.9
Common Ground 25 1 4% 1.86 20 1 5% 7.8
Old School Days 68 3 4% 0.07 16 3 19% 9.2
Guess the Digits 488 22 5% 0.01 74 19 26% 9.2
Towers of Powers 2: Power Harder 7399 339 5% 0.00 747 45 6% 9.5
Symmetric Polynomials 43 2 5% 0.00 5 2 40% 8.0
Tic Tac Toe 1153 56 5% 0.01 122 38 31% 9.0
Ice Cream 60 3 5% 0.21 9 3 33% 8.2
Ranklist Sorting 39 2 5% 0.01 13 2 15% 8.7
Maximum Expression 533 28 5% 0.00 76 23 30% 9.2
Flatland Fidget Spinner 128 7 5% 0.09 14 6 43% 7.0
The Bookcase 73 4 5% 0.31 30 4 13% 7.9
Swap Frenzy 779 44 6% 0.00 130 30 23% 9.1
Alien Codebreaking 274 16 6% 3.23 48 13 27% 8.9
Ball Tricks 68 4 6% 0.30 4 3 75% 7.9
Kingdom of Kittens 693 41 6% 0.15 68 28 41% 9.2
Final Exam 879 53 6% 1.12 109 31 28% 9.1
Fishing Contest 65 4 6% 0.77 15 4 27% 8.3
Peak Tower 702 44 6% 0.07 50 20 40% 8.6
Association of Camera Makers 325 21 6% 0.46 28 9 32% 9.4
Balanced Cut 426 28 7% 0.07 61 16 26% 9.5
Learning to code 760 52 7% 0.00 97 34 35% 7.9
A Different List Game 7424 513 7% 0.00 964 186 19% 9.3
Milk Tea Battle 258 18 7% 0.02 16 12 75% 7.6
Magic Sequence 7625 546 7% 0.57 325 111 34% 6.9
Forest Fruits 3345 243 7% 0.02 209 139 67% 4.4
Infection Estimation 715 53 7% 0.00 116 44 38% 9.0
Satisfaction Guaranteed 318 24 8% 6.78 29 10 34% 9.6
Wooden Crates 156 12 8% 0.22 31 10 32% 9.5
Easy Probability 624 48 8% 0.00 85 25 29% 9.0
Div 2, Mul 2, Mul 3 64 5 8% 0.35 17 5 29% 8.2
Entertaining Excursion 63 5 8% 0.01 7 5 71% 7.0
3-Sided Dice 2779 222 8% 0.00 447 158 35% 8.7
Funny Games 837 67 8% 0.34 95 42 44% 9.1
Sneak Attack 483 41 8% 0.00 43 18 42% 9.0
A Horse Shoe-In 106 9 8% 0.45 15 8 53% 8.6
Odometer Analysis 35 3 9% 0.00 9 3 33% 8.8
Bling 35 3 9% 0.25 7 2 29% 8.2
Ice Floe Jumping 534 46 9% 0.02 41 21 51% 9.4
Single source shortest path, safe path 4326 374 9% 0.06 236 165 70% 4.5
Ski Resort 115 10 9% 0.25 12 8 67% 6.1
Area of Effect 171 15 9% 1.38 30 13 43% 8.1
Mushroom Misery 182 16 9% 0.13 15 11 73% 6.8
Maze 66 6 9% 0.28 10 5 50% 8.3
Dominant Strings 2230 207 9% 0.03 267 112 42% 8.7
Ads 796 74 9% 0.00 139 50 36% 5.8
Easter Eggs 342 32 9% 0.17 35 14 40% 9.2
As Easy as CAB 1239 116 9% 0.00 273 91 33% 9.1
Lines Of Action 32 3 9% 0.01 4 2 50% 7.0
Aladin 834 79 9% 0.10 138 30 22% 8.6
Magical String 501 48 10% 0.01 88 24 27% 9.4
Chasing the Cheetahs 647 63 10% 0.03 46 34 74% 7.4
Sheep Pen 328 32 10% 0.00 36 25 69% 7.7
Association of Computer Maintenance 948 93 10% 0.03 113 57 50% 8.5
Being Solarly Systematic 499 49 10% 0.01 63 34 54% 8.4
A+B Problem 9127 900 10% 0.03 1304 428 33% 8.4
Enigma 91 9 10% 0.00 18 8 44% 8.7
Course Planning 322 32 10% 0.08 68 30 44% 8.9
Planete 70 7 10% 0.04 13 7 54% 6.2
NVWLS 1853 190 10% 0.20 313 122 39% 8.3
Oop 477 49 10% 0.47 90 33 37% 9.1
Hiring and Firing 379 39 10% 0.05 70 26 37% 9.5
#exclude<scoring> 68 7 10% 0.03 14 6 43% 8.2
Horse in Ambush 155 16 10% 0.00 31 14 45% 9.0
Shovelling Snow 1273 132 10% 0.01 108 42 39% 8.4
Easy Multiplication 395 41 10% 0.01 78 25 32% 8.0
Sudoku 403 42 10% 0.02 80 30 38% 8.8
DVD Screensaver 343 36 10% 0.00 43 19 44% 8.4
Bona Fide 19 2 11% 0.88 6 1 17% 7.8
Clinic 3041 322 11% 0.04 285 185 65% 3.3
Battle of Pokenom 1322 140 11% 0.00 277 107 39% 8.3
Gauntlet of Fire 84 9 11% 0.18 12 8 67% 8.3
┼Żabe 65 7 11% 0.00 14 6 43% 8.7
Uncrossed Knight's Tour 157 17 11% 0.00 27 16 59% 6.8
Liga 1191 129 11% 0.00 144 102 71% 6.0
Planetary Grid 358 39 11% 0.00 73 30 41% 7.7
Trains 82 9 11% 0.00 19 9 47% 8.5
Wire Crossing 346 38 11% 0.02 46 31 67% 6.5
Boom! 352 39 11% 0.09 59 25 42% 8.7
Fun with Fibonacci 361 40 11% 0.76 48 27 56% 8.3
Pipes 9 1 11% 1.13 3 1 33% 7.3
Gotta Catch Em All! 1652 187 11% 0.14 243 100 41% 8.1
Downpayment 150 17 11% 0.01 29 15 52% 8.9
Coupons 44 5 11% 0.14 11 5 45% 8.2
AI Jeopardy 465 53 11% 0.02 59 39 66% 7.3
Who Wants to Live Forever? 262 30 11% 0.01 56 27 48% 7.8
Counting Palindromes 349 40 11% 0.19 63 32 51% 8.1
Winter Roads 278 32 12% 0.23 39 19 49% 8.6
Bakterije 190 22 12% 0.00 38 18 47% 8.9
Zerg Rush!!! 103 12 12% 0.28 16 10 62% 7.6
nnnnn 2334 272 12% 0.01 303 124 41% 8.6
Visitors Train 51 6 12% 0.00 12 5 42% 9.2