Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	USERS	ACC %	DIFFICULTY C I
2630	Autoarchive	8	33.33
2632	Max Power	97	43.41
2859	Help Conan 8 !! Hurry up !!	3	3.00
2907	Super Factor Sum	79	27.38
3131	Time to Graduate	11	35.14
3250	The Seven Percent Solution	200	18.32
3256	Rock Skipping	13	35.14
3313	Software Bugs	139	67.21	1 1
3318	Pascals Travels	41	34.04
3319	Speed Limit	454	61.16
3443	Netiquette	14	40.48
3917	Tree Query	14	39.02
3997	HARDWARE	78	39.72
4074	Compile Error	221	58.35	9 1
4171	DIOPHANTINE	180	40.76
4192	Lucky cities	17	32.88
4193	Quick answer	4	16.00
4196	Internet Service Providers	44	29.79
4205	Highway - MSE07F	7	69.23
4207	Mobile (Again)	13	61.29
4215	Inversions	54	55.98
4245	Place the Numbers I	6	3.35
4304	Pawn	13	43.75
4422	A Dwarf - N Snow Whites	0	0.00
4500	Helms Deep	120	39.75	1 1
4543	Mysterio s Menace	85	38.85
4768	Cool Numbers	203	37.21
4770	Add and Reverse Sums	196	29.77
4788	MCD	95	74.83
4832	Pitagoras y Fermat	27	34.59
4834	Happy Sequence	245	74.44
4854	Primo Kripta	23	35.87
4865	Yupana inca	25	74.42
4869	Flat Land	2	12.00
4872	Good Sequence	234	69.72
5009	Alphabet Arithmetic	71	29.51
5195	Angry Knights	20	30.43
5200	Lsu Football	27	85.22
5228	Old problem	47	29.69
5241	Alchemy	446	54.04
5302	Surprising Strings	24	52.00	17 1
5313	Root of the Problem	184	50.24	1 1
5371	Rational Number	144	42.80
5387	Interesting determinant	49	46.15
5447	Probability One	474	69.41
5779	Interleaved Periodic String	42	54.76
5848	Filip	343	66.73
5871	Grid	75	20.45	1 1
5872	Anagram	878	44.87	1 1
5965	The Element of Surprise	122	49.32