Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
4554	Relax! It is just a game	-8	3880	48.48	1 4
4762	Desde Hasta	1	202	33.60	17 17
4768	Cool Numbers		205	37.29
4770	Add and Reverse Sums		199	30.04
4830	Z meet	-1	153	74.06
4832	Pitagoras y Fermat		28	35.00
4834	Happy Sequence		248	74.51
4854	Primo Kripta		25	36.84
4865	Yupana inca		24	66.67
4869	Flat Land		2	12.00
4872	Good Sequence		239	70.10
4873	ABC Blocks	1	105	55.36	17 17
4897	Meowist Networking	8	897	36.73	14 4
4906	Pythagorean Triples	1	1009	60.33	1 1
4907	Most Common Letter	1	228	41.39	1 1
5009	Alphabet Arithmetic		77	30.74
5012	Spanish Conjugation	1	79	37.93	17 1
5037	Fibonacci Counting System	-1	28	88.89
5132	Hello Kitty	6	4382	44.81	5 1
5194	Robbery	1	284	58.56	17 17
5195	Angry Knights		23	30.34
5200	Lsu Football		31	85.71
5228	Old problem		49	30.05
5241	Alchemy		476	54.00
5302	Surprising Strings		28	48.39	17 1
5313	Root of the Problem		188	50.59	1 1
5371	Rational Number		150	43.01
5387	Interesting determinant		51	34.03
5447	Probability One		479	69.51
5779	Interleaved Periodic String		42	47.83
5848	Filip		347	66.96
5871	Grid		80	21.90	1 1
5872	Anagram		884	44.84	1 1
5873	Rnumber	1	15	26.83	17 17
5874	Square	-1	52	23.98	1 1
5899	A simple equation	3	292	41.20	9 17
5900	Decreasing Strings	-1	84	48.76
5965	The Element of Surprise		125	49.83
5966	Generalized Chess		45	45.61
6501	Median	5	261	25.37	17 17
6521	SuperPower		35	50.00
6523	Digital Root Counter		82	60.51
6524	Find the group		54	43.98
6528	Circle Counting		53	50.62	1 1
6651	Snapper Chain	1	68	46.03
6653	Lexicographic Order 1		19	69.23
6654	Lexicographic Order 2	1	52	32.64	17 17
6655	Lexicographic Order 3		5	12.20
6656	Lexicographic Order 4		7	42.11
6666	How Many Trees 1		19	33.85