Problems by Piotr Rudnicki

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A Flea on a Chessboard 446 97 22% 0.01 106 77 73% 5.8
Antiarithmetic? 1494 269 18% 0.01 334 192 57% 7.2
Ants 3639 1606 44% 0.00 1291 1129 87% 2.5
Bachet's Game 2211 1161 53% 0.08 778 721 93% 2.1
Basic Remains 493 222 45% 0.01 189 169 89% 3.4
Brownie Points I 328 186 57% 0.02 166 153 92% 2.3
Brownie Points II 35 6 17% 0.11 9 4 44% 7.8
Closest Sums 4185 1546 37% 0.00 1255 1091 87% 3.0
Cutting a polygon 241 42 17% 0.00 45 29 64% 7.8
Ferry Loading IV 3003 908 30% 0.00 955 698 73% 3.6
Grid Speed 15 3 20% 0.04 5 3 60% 6.6
How many 0's? 891 389 44% 0.00 353 267 76% 4.2
Knights in Fen 1943 674 35% 0.00 353 304 86% 3.2
Magic Bitstrings 100 44 44% 0.00 39 33 85% 4.4
Marbles On A Tree 1066 404 38% 0.00 282 252 89% 3.0
Persistent Numbers 557 238 43% 0.02 192 159 83% 3.8
Rectilinear Polygon 45 17 38% 0.01 19 15 79% 5.5
Three Powers 1881 913 49% 0.00 749 691 92% 2.5
Tri Tiling 1344 595 44% 0.00 490 458 93% 2.1
Watering Grass 2422 532 22% 0.02 413 314 76% 5.5