Problems from Principles of Algorithmic Problem Solving

Name Fastest Shortest Total Acc. Ratio Difficulty Languages
Arithmetic Functions 0.00 67 1111 649 58% 1.7Easy en
Bit Game 0.20 445 86 20 23% 7.0Hard en
Chocolate Division 0.00 38 581 299 51% 2.0Easy en
Cinema Crowds 0.00 53 1619 699 43% 2.2Easy en
Cinema Crowds 2 0.00 58 1197 726 61% 1.8Easy en
Cinema Seating 0.03 388 578 260 45% 2.7Easy en
Counting Days 0.00 121 236 114 48% 2.8Medium en
Cut in Line 0.00 106 1143 797 70% 1.6Easy en
Digit Swap 0.00 3 10845 6796 63% 1.3Easy en
Divisor Counts 0.06 94 255 111 44% 5.8Hard en
Divisor Shuffle 0.03 75 231 80 35% 5.6Hard en
Dual Divisibility 0.00 51 382 116 30% 4.7Medium en
Eulerian Graphs 0.02 354 309 139 45% 3.0Medium en
Eulerian Graphs 2 0.05 409 356 175 49% 4.0Medium en
Evening Out 1 0.00 33 505 173 34% 2.7Easy en
Evening Out 2 0.00 122 419 101 24% 4.9Medium en
Factorial Power 0.00 377 103 44 43% 5.1Medium en
Fire Exits 0.01 1566 35 7 20% 7.5Hard en
Fuzzy Family Tree 0.03 457 120 44 37% 4.3 - 5.0Medium en
GCD 0.00 13 1336 668 50% 1.8Easy en
GCD and LCM 0.01 276 145 42 29% 5.2Medium en
GCD Sum 0.00 410 157 22 14% 7.8Hard en
GCD Sum 2 0.59 287 84 32 38% 5.4Medium en
Generalized Knights 0.19 3795 150 2 1% 8.1Hard en
Grading 0.00 54 3371 1955 58% 1.6Easy en
Hailstone Sequences 0.00 48 1455 758 52% 1.8Easy en
Hermits 0.01 194 1376 444 32% 3.3Medium en
Inheritance 0.00 82 159 93 58% 2.4Easy en
Inverse Totient 0.50 2526 53 4 8% 7.1Hard en
Knight Packing 0.00 27 4027 2598 65% 1.3Easy en
Logic Functions 0.00 97 1006 590 59% 1.5Easy en
Longest path in a DAG 0.01 589 209 75 36% 5.5Hard en
Longest Prime Sum 0.00 12 978 426 44% 2.3Easy en
Marathon 0.00 250 64 21 33% 6.2Hard en
Mårten's DFS 0.05 707 268 125 47% 5.2 - 6.1Hard en sv
Massive Card Game 0.04 143 4491 1115 25% 2.9Medium en
Maximum Clique 0.00 416 458 324 71% 3.1 - 7.1Hard en
Minimal Fibonacci Sums 0.00 82 312 187 60% 2.2Easy en sv
Multiplication Table 0.01 74 634 197 31% 3.1 - 3.7Medium en
N-sum 0.00 15 11536 6672 58% 1.3Easy en
Odd A's, Even B's 0.00 64 378 152 40% 5.0Medium en
Odd Echo 0.00 8 16363 8223 50% 1.3 - 1.4Easy en
Popularity Contest 0.01 72 1262 835 66% 2.0Easy en
Positive Divisors 0.00 111 870 201 23% 3.4Medium en
Primality 0.00 45 696 271 39% 2.4 - 5.1Medium en
Prime Count 0.03 461 949 589 62% 3.8 - 9.0Hard en
Product Divisors 0.09 487 155 42 27% 6.1Hard en
Sailing Friends 0.01 579 130 62 48% 3.8Medium en
Shortest Composite Sum 0.00 28 536 189 35% 4.3Medium en
Subcommittees 0.00 140 152 44 29% 6.6Hard en
Triangle Area 0.00 15 15523 8057 52% 1.4Easy en
Triangle Drama 0.00 196 208 137 66% 2.9Medium en
Trip Planning 0.05 193 1721 539 31% 3.3Medium en
Two-sum 0.00 11 19607 10162 52% 1.4Easy en
Varied Amusements 0.00 112 506 278 55% 2.3 - 3.5Medium en
Vector Functions 0.03 613 1436 375 26% 2.9Medium en