Problems by Piotr Rudnicki

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A Flea on a Chessboard 1023 214 21% 0.01 212 151 71% 5.3
Antiarithmetic? 2177 418 19% 0.01 474 270 57% 7.6
Ants 5234 2411 46% 0.00 1910 1686 88% 2.4
Bachet's Game 4196 1820 43% 0.04 1199 1086 91% 3.3
Basic Remains 1055 477 45% 0.01 424 379 89% 3.3
Brownie Points I 599 352 59% 0.02 312 292 94% 2.3
Brownie Points II 51 13 25% 0.11 16 9 56% 7.4
Closest Sums 6619 2436 37% 0.00 1967 1704 87% 3.2
Cutting a polygon 303 46 15% 0.00 58 33 57% 8.8
Ferry Loading IV 3765 1258 33% 0.00 1254 971 77% 3.1
Grid Speed 23 5 22% 0.04 9 5 56% 7.5
How many 0's? 1254 568 45% 0.00 523 401 77% 4.6
Knights in Fen 2810 978 35% 0.00 529 452 85% 3.6
Magic Bitstrings 138 58 42% 0.00 54 45 83% 6.1
Marbles On A Tree 1763 683 39% 0.00 501 452 90% 3.0
Persistent Numbers 1062 416 39% 0.02 340 282 83% 3.9
Rectilinear Polygon 61 27 44% 0.01 27 22 81% 5.1
Three Powers 2945 1428 48% 0.00 1165 1081 93% 2.2
Tri Tiling 2269 995 44% 0.00 845 764 90% 2.4
Watering Grass 4958 1073 22% 0.02 774 585 76% 5.4