Problems by Piotr Rudnicki

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A Flea on a Chessboard 999 210 21% 0.01 209 148 71% 5.3
Antiarithmetic? 2137 409 19% 0.01 466 264 57% 7.7
Ants 4927 2247 46% 0.00 1829 1618 88% 2.4
Bachet's Game 3919 1753 45% 0.04 1133 1037 92% 2.7
Basic Remains 1005 458 46% 0.01 405 363 90% 3.3
Brownie Points I 549 339 62% 0.02 297 281 95% 2.2
Brownie Points II 51 13 25% 0.11 16 9 56% 7.4
Closest Sums 6131 2312 38% 0.00 1826 1604 88% 2.7
Cutting a polygon 303 46 15% 0.00 58 33 57% 8.8
Ferry Loading IV 3715 1234 33% 0.00 1227 950 77% 3.1
Grid Speed 23 5 22% 0.04 9 5 56% 7.4
How many 0's? 1222 567 46% 0.00 516 400 78% 4.3
Knights in Fen 2784 973 35% 0.00 521 448 86% 3.5
Magic Bitstrings 138 58 42% 0.00 54 45 83% 6.1
Marbles On A Tree 1690 653 39% 0.00 476 429 90% 3.0
Persistent Numbers 956 402 42% 0.02 324 270 83% 3.9
Rectilinear Polygon 60 26 43% 0.01 26 21 81% 5.1
Three Powers 2745 1339 49% 0.00 1097 1018 93% 2.3
Tri Tiling 2195 954 43% 0.00 804 727 90% 2.4
Watering Grass 4677 1024 22% 0.02 735 559 76% 5.3