Problems by Piotr Rudnicki

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A Flea on a Chessboard	908	181	20%	0.01	191	133	70%	5.3
Antiarithmetic?	2034	387	19%	0.01	442	253	57%	7.5
Ants	4550	2064	45%	0.00	1688	1481	88%	2.5
Bachet's Game	3658	1671	46%	0.04	1068	979	92%	2.5
Basic Remains	781	378	48%	0.01	331	298	90%	3.2
Brownie Points I	443	274	62%	0.02	248	233	94%	2.2
Brownie Points II	50	12	24%	0.11	15	8	53%	7.4
Closest Sums	5883	2175	37%	0.00	1714	1496	87%	3.0
Cutting a polygon	299	43	14%	0.00	55	30	55%	9.1
Ferry Loading IV	3527	1113	32%	0.00	1121	850	76%	3.2
Grid Speed	19	4	21%	0.04	7	4	57%	7.1
How many 0's?	1157	531	46%	0.00	479	372	78%	4.3
Knights in Fen	2738	965	35%	0.00	512	441	86%	3.4
Magic Bitstrings	109	52	48%	0.00	46	40	87%	4.0
Marbles On A Tree	1524	586	38%	0.00	422	381	90%	2.9
Persistent Numbers	877	372	42%	0.02	296	244	82%	3.9
Rectilinear Polygon	55	23	42%	0.01	23	18	78%	5.5
Three Powers	2533	1215	48%	0.00	986	910	92%	2.4
Tri Tiling	2007	861	43%	0.00	717	650	91%	2.4
Watering Grass	4220	888	21%	0.02	631	475	75%	5.5