Problems by Piotr Rudnicki

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A Flea on a Chessboard 908 181 20% 0.01 191 133 70% 5.3
Antiarithmetic? 2034 387 19% 0.01 442 253 57% 7.5
Ants 4550 2064 45% 0.00 1688 1481 88% 2.5
Bachet's Game 3658 1671 46% 0.04 1068 979 92% 2.5
Basic Remains 781 378 48% 0.01 331 298 90% 3.2
Brownie Points I 443 274 62% 0.02 248 233 94% 2.2
Brownie Points II 50 12 24% 0.11 15 8 53% 7.4
Closest Sums 5883 2175 37% 0.00 1714 1496 87% 3.0
Cutting a polygon 299 43 14% 0.00 55 30 55% 9.1
Ferry Loading IV 3527 1113 32% 0.00 1121 850 76% 3.2
Grid Speed 19 4 21% 0.04 7 4 57% 7.1
How many 0's? 1157 531 46% 0.00 479 372 78% 4.3
Knights in Fen 2738 965 35% 0.00 512 441 86% 3.4
Magic Bitstrings 109 52 48% 0.00 46 40 87% 4.0
Marbles On A Tree 1524 586 38% 0.00 422 381 90% 2.9
Persistent Numbers 877 372 42% 0.02 296 244 82% 3.9
Rectilinear Polygon 55 23 42% 0.01 23 18 78% 5.5
Three Powers 2533 1215 48% 0.00 986 910 92% 2.4
Tri Tiling 2007 861 43% 0.00 717 650 91% 2.4
Watering Grass 4220 888 21% 0.02 631 475 75% 5.5