Sphere Online Judge (SPOJ)

list of basics problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
17994	Cross Pattern (Act 1)	4	1113	51.94	1 1
17921	XOR	-14	7632	58.17	1 1
17481	Fun with Sequences (Act 5)	2	718	29.84	1 1
17126	Fun with Sequences (Act 4)	4	1009	52.80	4 1
17104	Fun with Sequences (Act 3)	4	1992	44.79	1 1
17103	Fun with Sequences (Act 2)	2	2458	66.74	1 4
17102	Fun with Sequences	4	3465	41.28	1 1
16935	Straight Line Spiral Pattern (Act 3)	1	125	36.08	17 17
16934	Straight Line Spiral Pattern (Act 2)	4	210	66.87	12 6
16892	Straight Line Spiral Pattern (Act 1)	2	252	35.62	9 5
16891	Character Patterns (Act 8)	1	502	57.61	6 1
15711	Wow	6	8998	50.24	1 1
15710	Iterated sums	6	6533	53.25	1 1
15709	Two Circles	7	1481	24.48	3 5
15708	Divisibility	13	7672	51.76	4 3
13524	Evaluate simple RPN expression	1	106	10.25	1 1
12206	Hidden Password	10	828	37.93	11 6
12205	Minimum Bounding Rectangle	7	1464	62.23	7 5
12188	Character Patterns (Act 7)	4	929	43.69	10 8
12187	Character Patterns (Act 6)	2	1382	67.75	1 4
12185	Character Patterns (Act 5)	2	1294	35.39	8 11
12180	Character Patterns (Act 4)	6	3486	65.75	6 5
12178	Character Patterns (Act 3)	10	5108	55.32	5 6
12177	Character Patterns (Act 2)	4	7934	48.27	1 1
12176	Character Patterns (Act 1)	5	11598	41.73	5 5
12156	Half of the half	10	13153	31.45	3 2
12026	Test 1	6	27341	45.44	3 3
2730	Life, the Universe, and Everything (Interactive)	3	7320	19.94	1 1
2135	SPOJ Custom Test	9	10586	44.69	32 32
1181	Obfuscated Property		6	0.84