Problems by Piotr Rudnicki

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A Flea on a Chessboard 770 145 19% 0.01 166 114 69% 5.6
Antiarithmetic? 1787 317 18% 0.01 402 226 56% 7.4
Ants 4190 1872 45% 0.00 1516 1327 88% 2.6
Bachet's Game 3227 1517 47% 0.07 985 901 91% 2.5
Basic Remains 698 327 47% 0.01 281 251 89% 3.3
Brownie Points I 399 242 61% 0.02 218 203 93% 2.3
Brownie Points II 44 9 20% 0.11 13 6 46% 7.6
Closest Sums 5192 1909 37% 0.00 1540 1342 87% 2.9
Cutting a polygon 294 43 15% 0.00 53 30 57% 8.7
Ferry Loading IV 3376 1051 31% 0.00 1066 802 75% 3.3
Grid Speed 19 4 21% 0.04 7 4 57% 6.9
How many 0's? 1099 507 46% 0.00 455 353 78% 4.4
Knights in Fen 2642 928 35% 0.00 484 418 86% 3.3
Magic Bitstrings 108 51 47% 0.00 45 39 87% 3.9
Marbles On A Tree 1353 546 40% 0.00 389 349 90% 3.0
Persistent Numbers 803 346 43% 0.02 266 223 84% 3.8
Rectilinear Polygon 48 19 40% 0.01 20 16 80% 5.5
Three Powers 2312 1119 48% 0.00 900 826 92% 2.5
Tri Tiling 1752 736 42% 0.00 624 572 92% 2.3
Watering Grass 3859 799 21% 0.02 569 432 76% 5.2