Problems

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Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 14100 2240 16% 0.00 2909 1554 53% 6.0
10 Kinds of People 30217 6138 20% 0.01 5262 3748 71% 4.7
1's For All 699 140 20% 0.00 145 90 62% 6.4
2048 12316 5556 45% 0.00 5419 4600 85% 2.5
2, 4, 6, Greaaat 1220 174 14% 0.15 143 60 42% 8.3
3D Printed Statues 16809 7732 46% 0.00 7312 6533 89% 1.9
3D Printer 1141 182 16% 0.00 503 137 27% 9.0
3-Sided Dice 3073 249 8% 0.00 517 177 34% 8.7
4 thought 14287 4971 35% 0.00 4722 3990 84% 2.7
99 Problems 289 173 60% 0.00 170 164 96% 1.6
A1 Paper 7553 2340 31% 0.00 2320 1861 80% 3.5
Aa 272 143 53% 0.01 72 43 60% 6.1 - 7.8
Aaah! 40459 18933 47% 0.00 17155 15990 93% 1.6
Abandoned Animal 3036 691 23% 0.03 775 566 73% 5.7
ABC 23461 10668 45% 0.00 10168 9218 91% 1.9
Ab Initio 2599 422 16% 0.08 363 228 63% 7.4
Above Average 16200 6630 41% 0.00 6396 5724 89% 2.3
A+B Problem 10954 1057 10% 0.03 1560 509 33% 8.4
Abridged Reading 294 113 38% 0.00 110 86 78% 5.3
A Brief Gerrymander 582 115 20% 0.11 109 53 49% 8.8
Abstract Art 473 156 33% 0.00 133 96 72% 7.1
Abstract Painting 1344 521 39% 0.00 458 362 79% 4.5
Absurdistan Roads II 724 244 34% 0.00 248 164 66% 6.9
Absurdistan Roads III 1956 564 29% 0.02 523 396 76% 5.8
Access Denied 780 210 27% 0.01 205 182 89% 3.5
Access Points 558 188 34% 0.01 181 140 77% 5.8
Accounting 3652 1072 29% 0.01 893 675 76% 3.3
A Classy Problem 14263 3804 27% 0.01 3292 2589 79% 3.9
ACM Contest Scoring 9465 5931 63% 0.00 5324 5030 94% 1.6
Ada Loveslaces 84 19 23% 0.01 24 17 71% 5.3
Add 'Em Up! 3184 755 24% 0.01 791 563 71% 4.9
Adding Words 17047 4268 25% 0.00 3901 3074 79% 3.7
Add Two Numbers 9453 5963 63% 0.00 5498 5273 96% 1.3
A Different List Game 7840 552 7% 0.00 1050 201 19% 9.3
A Different Problem 45755 16849 37% 0.00 15479 13392 87% 2.5
Adjoin the Networks 2984 756 25% 0.00 660 525 80% 5.9
Administrative Difficulties 2150 465 22% 0.02 436 309 71% 5.9
Ads 1061 158 15% 0.00 212 98 46% 5.0
Advanced Causal Measurements 130 41 32% 0.10 43 32 74% 7.4
Adventure Begins 413 131 32% 0.06 121 93 77% 6.5
Adventures in Moving -- Part IV 1871 415 22% 0.00 362 295 81% 5.0
A Favourable Ending 2342 630 27% 0.00 585 451 77% 4.7
A Feast For Cats 4257 1590 37% 0.00 1169 1011 86% 3.3
A Flea on a Chessboard 1076 225 21% 0.01 226 160 71% 5.5
Agamemnon's Odyssey 145 40 28% 0.09 43 29 67% 5.7
A Horse Shoe-In 191 18 9% 0.27 25 11 44% 9.1
AI Jeopardy 629 84 13% 0.02 86 55 64% 7.0
Air Conditioned Minions 8760 2613 30% 0.00 2577 2021 78% 3.4
Airline Hub 2507 550 22% 0.01 498 297 60% 6.8
Airport Coffee 1545 300 19% 0.04 293 197 67% 7.1
Airport Construction 3918 485 12% 0.02 430 225 52% 8.0
Airport Logistics 79 23 29% 0.00 29 21 72% 7.3
Airports 719 222 31% 0.11 194 144 74% 5.7
Air Rally 110 1 1% 0.98 18 1 6% 8.5
Akcija 13961 6140 44% 0.00 5095 4564 90% 2.0
Aladin 909 104 11% 0.10 149 33 22% 9.0
Alchemy 181 36 20% 0.02 48 25 52% 9.1
Alchemy 101 1052 336 32% 0.05 244 200 82% 3.8
Alea iacta est 46 16 35% 0.19 21 15 71% 6.7
Alehouse 1262 468 37% 0.02 445 319 72% 5.1
Alex and Barb 1697 625 37% 0.00 711 566 80% 3.3
Alice in the Digital World 6736 1765 26% 0.01 1593 1269 80% 4.0
Alien Codebreaking 334 33 10% 0.59 63 18 29% 8.1
Alien Integers 1525 304 20% 0.00 390 278 71% 5.6
Alien Microwave 295 112 38% 0.00 147 105 71% 6.6
Alien Numbers 3261 1759 54% 0.00 1731 1588 92% 1.9
A List Game 12515 3761 30% 0.00 3650 3090 85% 3.0
All about that base 3603 1463 41% 0.00 1416 1210 85% 2.7
All Colourings 12 7 58% 0.13 9 7 78% 6.0
All Different Directions 1889 913 48% 0.00 865 781 90% 2.3
Allergy Test 700 187 27% 0.00 233 122 52% 7.8
All Friends 1293 245 19% 0.00 230 125 54% 8.7
All in the Family 218 45 21% 0.00 65 43 66% 5.1
All is Well 167 41 25% 0.02 42 34 81% 6.8
All Just A Dream 3327 936 28% 0.05 651 505 78% 5.3
All Kill 137 109 80% 0.00 63 55 87% 2.7
Alloys 1154 394 34% 0.00 420 345 82% 3.8
All Pairs Shortest Path 15632 3001 19% 0.00 1889 1368 72% 5.3
Almost Balanced 15 6 40% 0.27 9 5 56% 6.8
Almost Perfect 14963 3407 23% 0.00 3427 2743 80% 3.2
Almost Union-Find 13717 2248 16% 0.02 2009 1276 64% 5.7
Alphabet 3126 1601 51% 0.00 1546 1310 85% 3.0
Alphabet Animals 10782 1916 18% 0.00 1600 1128 70% 5.2
Alphabet Spam 12473 7843 63% 0.00 6664 6410 96% 1.4
Alternating Current 723 702 97% 0.00 132 126 95% 1.4 - 8.4
Alternative Anagram 279 89 32% 0.00 83 59 71% 7.3
Alternative Bracket Notation 248 107 43% 0.00 114 94 82% 5.3
Alto Singing 139 55 40% 0.00 55 50 91% 3.8
Altruistic Amphibians 625 178 28% 0.22 151 113 75% 5.4
Amalgamated Artichokes 5606 2531 45% 0.01 2222 1972 89% 2.5
Amanda Lounges 2133 622 29% 0.03 534 435 81% 5.6
A Mazing! 4203 1092 26% 0.09 448 335 75% 5.3
Amazing Adventures 577 157 27% 0.02 182 127 70% 6.9
Amazing Race 778 190 24% 0.29 171 130 76% 6.0
Ambiguous Result 305 72 24% 0.02 104 66 63% 7.2
Amsterdam Distance 2688 1358 51% 0.00 1331 1152 87% 2.5
A Multiplication Game 1622 656 40% 0.00 710 554 78% 4.3
Anagram Counting 5258 2096 40% 0.00 2048 1719 84% 3.2
AND Permutation 135 28 21% 0.22 43 20 47% 8.6
Andrew the Ant 592 183 31% 0.01 185 142 77% 5.2