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