Problems by Ragnar Groot Koerkamp

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Daily Division	218	64	29%	0.06	51	42	82%	4.3
Detour	860	258	30%	0.03	218	178	82%	4.0
Disastrous Doubling	1249	323	26%	0.01	291	249	86%	3.7
Harry the Hamster	45	20	44%	0.11	21	17	81%	7.0
Height Profile	318	76	24%	0.09	70	58	83%	6.4
Isomorphic Inversion	468	129	28%	0.00	101	76	75%	5.4
Janitor Troubles	1219	822	67%	0.00	808	775	96%	1.5
Journal Editing	178	37	21%	0.13	32	26	81%	6.1
Jumping Choreography	53	22	42%	0.90	16	13	81%	5.8
Jurassic Jigsaw	342	181	53%	0.01	124	118	95%	2.2
KALLAX Construction	121	31	26%	0.00	31	26	84%	4.4