Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
5371	Rational Number		144	42.80
40456	RAU A		0	0.00
28178	Real Give Away	1	33	51.47	1 1
9106	REARRANGE		123	38.38
13213	Rectangle Intersection	1	60	17.87	1 1
22793	Rectangular Spirals		1	1.82
1239	Recurrence Equation Finder		20	68.42
8142	Recursive function	1	75	43.50
20762	Recursive Functions		22	63.16
26496	Recursive World!!!		100	38.27	15 26
32013	Red-Black Trees		177	85.85
2626	RegExp Master	-1	88	36.73	34 17
7865	Regular expressions (Easy)		12	38.18
13421	RELATIVE PRIMES		35	76.92
4554	Relax! It is just a game	-8	3869	48.45	1 4
32109	Relaying the roads		133	95.99
20748	Remove Duplicates		82	58.33
20749	Remove Duplicates 2		227	63.15
20750	Remove Duplicates 3		23	10.50
23841	Repeat Your Tasks	-1	24	40.28
13837	Repeated Numbers		4	50.00
9173	Repetitions		8	17.11
15761	Replace Letters	-1	74	57.56
14025	Required - BYU Box	-1	35	84.78
22788	Research Problems	2	3	10.71
25530	RETO 06 DOC		8	100.00
25239	RETO 1 MARATÓN 11 (Calentamiento)		5	60.00
25246	RETO 4 MARATON 10		10	23.73
25507	RETO 6 DOC		6	58.33
25249	RETO 6 MARATON 11		0	0.00
25509	RETO DOC 7		4	100.00
25022	RETO MCM	1	51	78.21	1 1
25216	RETO SALARIOS		20	66.67
7663	Return SIGSEGV	2	1208	39.39	26 26
14745	Reverse	1	415	44.65	1 1
12166	Reverse And Add		54	33.33
10486	Reverse number		247	53.08
18644	Reverse Precedence		5	88.89
7289	Reverse text		262	35.75
13390	Reverse Words		116	30.62	1 1
7411	Reward for the hard work		79	53.93
27256	Riddle Riddle		66	39.00
14135	Right Triangle		45	27.84
5873	Rnumber	1	10	28.00	17 17
34295	Road Network	1	90	86.43
27490	Robber vs Miser		57	54.87
5194	Robbery	1	277	58.34	17 17
18049	Robert Langdon & Sign Queue		51	70.59
29748	Robin Hood		30	38.14	1 1
14970	Rock Paper Scissors Fox		43	65.33