Problems from Principles of Algorithmic Problem Solving

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Arithmetic Functions 645 393 61% 0.00 399 377 94% 1.7
Cinema Crowds 879 412 47% 0.00 397 370 93% 2.2
Cinema Crowds 2 791 489 62% 0.00 471 449 95% 1.8
Cinema Seating 271 116 43% 0.03 106 98 92% 3.0
Counting Days 120 67 56% 0.00 67 64 96% 2.6
Cut in Line 512 370 72% 0.00 322 313 97% 1.8
Digit Swap 4302 2892 67% 0.00 2833 2719 96% 1.3
Eulerian Graphs 180 102 57% 0.02 85 76 89% 3.3
Eulerian Graphs 2 265 144 54% 0.06 44 39 89% 4.3
Grading 2198 1331 61% 0.00 1295 1241 96% 1.5
Hailstone Sequences 689 410 60% 0.00 407 383 94% 1.8
Hermits 815 252 31% 0.01 263 198 75% 3.6
Logic Functions 517 313 61% 0.00 315 305 97% 1.6
Massive Card Game 522 227 43% 0.04 159 139 87% 2.9
N-sum 4597 2907 63% 0.00 2809 2695 96% 1.4
Odd A's, Even B's 214 93 43% 0.00 88 77 88% 4.8
Odd Echo 7538 4055 54% 0.00 3894 3653 94% 1.3
Popularity Contest 553 423 76% 0.01 288 280 97% 1.7
Triangle Area 6057 3506 58% 0.00 3349 3223 96% 1.3
Triangle Drama 147 91 62% 0.00 85 78 92% 3.1
Trip Planning 1090 375 34% 0.05 250 232 93% 2.4
Two-sum 8170 4678 57% 0.00 4536 4344 96% 1.3
Varied Amusements 255 154 60% 0.00 82 75 91% 2.4 - 3.8
Vector Functions 566 162 29% 0.03 165 144 87% 2.6