Problems by Piotr Rudnicki

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A Flea on a Chessboard 1076 225 21% 0.01 226 160 71% 5.5
Antiarithmetic? 2316 435 19% 0.01 509 285 56% 7.8
Ants 5621 2630 47% 0.00 2059 1828 89% 2.3
Bachet's Game 4512 1955 43% 0.04 1300 1173 90% 3.3
Basic Remains 1185 556 47% 0.01 489 442 90% 3.1
Brownie Points I 705 429 61% 0.02 378 355 94% 2.2
Brownie Points II 52 13 25% 0.11 17 9 53% 7.5
Closest Sums 7617 2786 37% 0.00 2292 1998 87% 2.7
Cutting a polygon 305 46 15% 0.00 60 33 55% 8.8
Ferry Loading IV 4094 1409 34% 0.00 1396 1093 78% 2.9
Grid Speed 83 11 13% 0.04 12 7 58% 6.8
How many 0's? 1342 623 46% 0.00 561 434 77% 3.9
Knights in Fen 2912 1021 35% 0.00 565 484 86% 3.5
Magic Bitstrings 140 59 42% 0.00 56 46 82% 6.3
Marbles On A Tree 1936 749 39% 0.00 554 501 90% 3.0
Persistent Numbers 1139 437 38% 0.02 366 301 82% 4.0
Rectilinear Polygon 62 27 44% 0.01 28 22 79% 5.2
Three Powers 3217 1548 48% 0.00 1268 1171 92% 2.3
Tri Tiling 2390 1043 44% 0.00 891 804 90% 2.5
Watering Grass 5782 1281 22% 0.02 880 680 77% 4.8