Problems

 RSS feed for new problems
Submissions Users
Name Total Acc. Ratio Fastest   Total Acc. Ratio Difficulty
2048 5846 2777 48% 0.00 2652 2266 85% 2.4
3D Printed Statues 5572 2640 47% 0.00 2514 2261 90% 1.8
3D Printer 479 106 22% 0.00 174 84 48% 7.7
3-Sided Dice 1842 152 8% 0.00 299 113 38% 8.6
4 thought 5767 1961 34% 0.00 1949 1628 84% 2.8
A1 Paper 3767 1118 30% 0.00 1100 862 78% 3.8
Aaah! 20174 9523 47% 0.00 8532 7938 93% 1.5
ABC 7966 3663 46% 0.00 3493 3179 91% 1.6
Above Average 4372 1812 41% 0.00 1840 1646 89% 2.0
Abstract Art 207 55 27% 0.00 55 41 75% 5.7
Absurdistan Roads II 496 178 36% 0.00 173 117 68% 6.8
ACM Contest Scoring 5011 3152 63% 0.00 2776 2624 95% 1.5
Adding Words 7165 1636 23% 0.00 1664 1262 76% 4.5
A Different List Game 5474 382 7% 0.00 669 133 20% 9.1
A Different Problem 21513 8277 38% 0.00 7676 6641 87% 2.2
Adjoin the Networks 1431 382 27% 0.00 334 259 78% 5.8
Adventures in Moving -- Part IV 743 229 31% 0.00 204 178 87% 4.2
A Favourable Ending 1234 315 26% 0.00 293 214 73% 4.8
A Feast For Cats 1457 527 36% 0.00 346 286 83% 4.6
Air Conditioned Minions 3106 875 28% 0.00 955 711 74% 4.2
Airport Logistics 45 10 22% 0.00 16 10 62% 7.7
Akcija 4922 2143 44% 0.00 1909 1687 88% 2.0
Alien Numbers 1734 891 51% 0.00 864 783 91% 2.0
A List Game 6044 1802 30% 0.00 1731 1451 84% 2.9
All about that base 2473 969 39% 0.00 933 781 84% 3.0
All Different Directions 896 386 43% 0.00 352 306 87% 2.6
Allergy Test 330 106 32% 0.00 102 56 55% 7.8
All Friends 779 151 19% 0.00 137 70 51% 8.6
Almost Perfect 5032 1173 23% 0.00 1244 978 79% 3.4
Alphabet 898 446 50% 0.00 457 387 85% 3.0
Alphabet Spam 5416 3493 64% 0.00 2712 2615 96% 1.3
Alternative Bracket Notation 193 81 42% 0.00 85 71 84% 4.9
Amsterdam Distance 976 401 41% 0.00 450 363 81% 2.8
A Multiplication Game 426 121 28% 0.00 147 109 74% 4.4
Anagram Counting 2615 1002 38% 0.00 956 792 83% 3.1
A New Alphabet 8481 3848 45% 0.00 3597 3330 93% 1.7
An I for an Eye 235 60 26% 0.00 72 53 74% 5.4
Another Brick in the Wall 2219 1073 48% 0.00 1039 945 91% 1.9
Another Candies 6047 1625 27% 0.00 1710 1400 82% 2.9
Another Dice Game 80 59 74% 0.00 51 48 94% 3.4
Anthony and Cora 658 170 26% 0.00 206 141 68% 5.6
Anthony and Diablo 1720 610 35% 0.00 672 581 86% 2.4
Ants 2606 1189 46% 0.00 908 810 89% 2.2
Apaxiaaaaaaaaaaaans! 9021 5514 61% 0.00 5002 4793 96% 1.4
Appalling Architecture 139 45 32% 0.00 52 43 83% 5.7
A Prize No One Can Win 460 206 45% 0.00 169 149 88% 2.4
Aquarium Tank 374 109 29% 0.00 99 78 79% 5.6
A Question of Ingestion 1058 255 24% 0.00 239 178 74% 5.7
A Random Problem 107 22 21% 0.00 26 17 65% 7.4
A Rational Sequence 1287 427 33% 0.00 467 335 72% 5.1
A Rational Sequence 2 1643 1221 74% 0.00 1075 1035 96% 1.5
A Rational Sequence (Take 3) 640 547 85% 0.00 422 412 98% 1.7
Arctic Network 1243 435 35% 0.00 377 299 79% 4.5
A Real Challenge 5935 2861 48% 0.00 2759 2583 94% 1.6
Are You Listening? 547 174 32% 0.00 170 159 94% 2.5
Arithmetic 2322 666 29% 0.00 693 525 76% 4.1
Army Strength (Easy) 2921 1482 51% 0.00 1357 1223 90% 2.0
Around and Around We Go 36 12 33% 0.00 21 11 52% 7.9
Around the Track 264 34 13% 0.00 53 24 45% 8.2
ASCII Addition 766 404 53% 0.00 342 323 94% 2.0
ASCII Figure Rotation 1668 504 30% 0.00 522 433 83% 3.8
As Easy as CAB 692 171 25% 0.00 167 133 80% 4.9
Aspen Avenue 1033 341 33% 0.00 252 165 65% 7.2
Association for Computing Machinery 1973 744 38% 0.00 714 622 87% 2.5
Association for Cool Machineries (Part 2) 45 26 58% 0.00 30 23 77% 6.3
Association for the Country of Mububa 1598 304 19% 0.00 388 234 60% 6.9
Asteroids 612 116 19% 0.00 73 59 81% 4.7
A Towering Problem 1685 798 47% 0.00 825 740 90% 2.1
Autori 11554 7483 65% 0.00 6960 6756 97% 1.2
Average Speed 855 264 31% 0.00 275 231 84% 3.4
A Vicious Pikeman (Easy) 1545 467 30% 0.00 395 334 85% 4.0
Baby Bites 2104 1140 54% 0.00 1065 992 93% 1.6
Babylonian Numbers 712 329 46% 0.00 338 292 86% 2.3
Backspace 6610 2456 37% 0.00 2018 1707 85% 2.5
Bacon, Eggs, and Spam 2723 1569 58% 0.00 1327 1240 93% 1.8
Baggage 301 101 34% 0.00 116 84 72% 4.8
Bakice 91 34 37% 0.00 43 32 74% 6.4
Bakterije 134 15 11% 0.00 26 12 46% 9.3
Balanced Diet 701 311 44% 0.00 279 223 80% 4.4
Ball Bearings 407 143 35% 0.00 154 125 81% 3.9
Banjo 232 45 19% 0.00 34 14 41% 9.2
Bank Queue 8526 2291 27% 0.00 2053 1672 81% 2.8
Bard 1307 597 46% 0.00 532 464 87% 2.6
Barking Up The Wrong Tree 212 23 11% 0.00 25 14 56% 8.6
Base-2 Palindromes 891 338 38% 0.00 386 286 74% 4.6
basic 70 18 26% 0.00 23 15 65% 7.8
Basin City Surveillance 755 92 12% 0.00 111 54 49% 8.7
Batmanacci 769 234 30% 0.00 231 185 80% 4.2
Batter Up 5142 3242 63% 0.00 2995 2900 97% 1.2
Battle of Pokenom 868 75 9% 0.00 203 66 33% 8.5
Battleship 551 103 19% 0.00 120 73 61% 7.3
Bazen 439 178 41% 0.00 180 167 93% 2.3
Beat the Spread! 2510 891 35% 0.00 808 707 88% 2.4
Beautiful Primes 462 126 27% 0.00 140 100 71% 4.9
Beavergnaw 1240 884 71% 0.00 854 834 98% 1.4
Beehives 1113 553 50% 0.00 501 453 90% 2.1
Bee House Perimeter 324 152 47% 0.00 139 126 91% 3.5
Beekeeper 2596 749 29% 0.00 769 644 84% 2.8
Bela 3755 2699 72% 0.00 2504 2443 98% 1.2
Bell Ringing 479 230 48% 0.00 209 172 82% 4.7