Problems from Principles of Algorithmic Problem Solving

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Arithmetic Functions 144 86 60% 0.00 87 82 94% 2.1
Cinema Crowds 246 131 53% 0.00 139 125 90% 2.6
Cinema Crowds 2 280 181 65% 0.00 177 167 94% 1.8
Cinema Seating 82 54 66% 0.03 49 46 94% 3.0
Counting Days 72 41 57% 0.00 40 39 98% 2.6
Cut in Line 127 105 83% 0.00 94 90 96% 2.2
Digit Swap 1640 1209 74% 0.00 1184 1140 96% 1.3
Eulerian Graphs 74 30 41% 0.03 31 24 77% 4.6
Eulerian Graphs 2 48 23 48% 0.06 21 19 90% 4.5
Grading 689 463 67% 0.00 461 444 96% 1.4
Hailstone Sequences 377 222 59% 0.00 222 208 94% 1.8
Hermits 461 104 23% 0.01 150 91 61% 5.8
Logic Functions 77 57 74% 0.00 59 57 97% 2.4
Massive Card Game 135 54 40% 0.04 41 33 80% 5.4
N-sum 1975 1403 71% 0.00 1338 1294 97% 1.3
Odd A's, Even B's 88 51 58% 0.00 45 43 96% 3.2
Odd Echo 1996 1261 63% 0.00 1235 1178 95% 1.3
Popularity Contest 144 117 81% 0.01 99 96 97% 2.1
Triangle Area 1931 1199 62% 0.00 1160 1114 96% 1.3
Triangle Drama 66 54 82% 0.00 48 45 94% 2.6
Trip Planning 68 37 54% 0.11 24 21 88% 5.1
Two-sum 2528 1521 60% 0.00 1513 1443 95% 1.4
Varied Amusements 116 88 76% 0.00 36 36 100% 2.4 - 3.1
Vector Functions 160 67 42% 0.03 63 62 98% 2.2