Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
11323	2D-SORT	1	900	20.16	6 1
11331	Two Squares		65	35.29
11333	Vowels	1	1170	65.20	1 1
11341	TWIN PRIMES		152	19.83
11342	Here be ducks		267	21.56
11356	TWIN PRIMES	1	35	41.28
11365	TSquare TO Square		19	35.71
11366	Zoom Operation		11	42.05
11368	Fibonacci brain	1	465	44.84	9 1
11382	Quadra vs PussyCat		57	50.53
11387	Perfect Cover		83	32.25	1 1
11398	Do You know your Algorithms		436	51.39
11464	Book Shelves(tutorial)		18	22.43
11492	Fast Schedule		262	50.00
11506	ANYTHING FOR ATTENDANCE		43	48.00
11507	SPIRAL RUN	2	363	53.59	1 12
11514	N-ARY TREE	1	84	49.75
11522	CHOCOLATES	1	80	40.00	1 1
11556	Find the minimum no of squares	1	22	32.50
11559	Are you smart enough		22	55.10
11567	Find the missing card		49	43.31
11572	A Famous Music Composer		347	39.59
11581	The Famous Clock		128	56.40
11600	Another Mathematical Problem		94	34.56
11643	Cross dangerous minefields		10	31.25
11722	HELP ABHISHEK		43	51.19
11728	Forest Fires		214	40.41
11731	PATENTES		18	48.72
11732	CARTONES CREDECRECIENTES		23	48.86
11788	Ishika and Kashish		3	45.45
11807	Think Different	1	121	42.54	1 1
11821	Combinatorial Sequence	1	28	59.65	1 50
11852	Power with Combinatorics(EASY)	3	90	23.67	26 26
11876	Finding Majority		288	43.31	1 1
11877	Upcoming Demons		21	30.23
11902	Bit Maker		25	23.43
11934	PUT TRINOMO		179	32.25
11936	FIBO BIT	1	17	28.57	1 34
11960	Prime Factorization	4	402	22.80	17 17
11961	Party trouble		68	29.19
11976	Permutation		23	33.91
11980	Sequence		315	29.70
11989	Factorial large		20	18.67
11990	Measuring Water		97	25.68
12071	Point Blank		34	33.91
12072	Playing With Bits		172	54.99
12083	Appetizer		122	51.45
12092	Dessert		113	44.52
12100	Main Course		6	23.53
12101	Entrée		144	50.11