Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
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	46.09
6192	H Function		96	36.88
6501	Median	5	257	25.13	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	51	33.16	17 17
6655	Lexicographic Order 3		5	12.20
6656	Lexicographic Order 4		7	42.11
6666	How Many Trees 1		19	33.85
6667	How Many Trees 2		14	19.48
6677	Rope Intranet		131	48.77
7129	Happy Telephones	1	258	49.50
7136	Blowing Fuses		97	28.04
7207	Alchemy	1	2239	39.96	1 1
7236	The next odd number	1	480	47.89	1 1
7237	Biggest !	1	448	15.97	1 17
7262	Nth greater value		105	50.39
7272	Take Away Game	1	120	18.66	17 34
7273	Rank of a Permutation		89	49.55
7274	Fibonacci Representation	1	24	45.07
7287	Making Palindrome		13	15.45
7411	Reward for the hard work		83	54.80
7413	Tile game		61	49.01
7414	Thank you Chief ;)		231	46.68	1 1
7431	Vikram & Betaal	1	55	69.15	1 1
7483	C style constants		26	66.06
7663	Return SIGSEGV	2	1211	39.39	26 26
7667	Minimum and maximum numbers		320	22.77
7672	Salsa Dance		173	33.85
7673	Making your own Calculator		15	15.04
7674	Easy Game		48	52.46
7675	Squares		77	36.18
7677	Frequent Values		17	16.67
7775	Explicit Formula		1718	57.17	1 1
7856	Tower Game (Easy)		36	35.19
7858	Upper Right King (Easy)	1	81	36.22	1 9
7863	Four Chips (Easy)		15	22.54
7865	Regular expressions (Easy)		14	38.26
7869	Boards (Easy)		5	15.91
7885	Happy Numbers II - Trial		282	49.68	34 17
7893	Weekdays		24	51.61