Sphere Online Judge (SPOJ)

list of basics problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
18012	Fun with Sequences (Act 7)		886	52.48	1 1
18011	Fun with Sequences (Act 6)	2	1025	47.77	1 1
17995	Cross Pattern (Act 2)	3	583	54.97	1 1
17994	Cross Pattern (Act 1)	4	1146	51.74	1 1
17921	XOR	-14	8230	58.34	1 1
17481	Fun with Sequences (Act 5)	2	731	29.84	1 1
17126	Fun with Sequences (Act 4)	4	1026	52.19	4 1
17104	Fun with Sequences (Act 3)	4	2049	44.74	1 1
17103	Fun with Sequences (Act 2)	2	2542	66.71	1 4
17102	Fun with Sequences	4	3639	40.82	1 1
16935	Straight Line Spiral Pattern (Act 3)	1	129	35.11	17 17
16934	Straight Line Spiral Pattern (Act 2)	4	217	61.44	12 6
16892	Straight Line Spiral Pattern (Act 1)	2	265	33.52	9 5
16891	Character Patterns (Act 8)	1	525	56.45	6 1
15711	Wow	6	9397	50.28	1 1
15710	Iterated sums	6	6839	53.23	1 1
15709	Two Circles	7	1573	24.99	3 5
15708	Divisibility	13	8242	52.03	4 3
13524	Evaluate simple RPN expression	1	132	12.09	1 1
12206	Hidden Password	10	848	36.65	11 6
12205	Minimum Bounding Rectangle	7	1560	62.89	7 5
12188	Character Patterns (Act 7)	4	961	44.05	10 8
12187	Character Patterns (Act 6)	2	1420	65.72	1 4
12185	Character Patterns (Act 5)	2	1336	35.30	8 11
12180	Character Patterns (Act 4)	6	3601	65.80	6 5
12178	Character Patterns (Act 3)	11	5314	54.48	6 6
12177	Character Patterns (Act 2)	5	8325	48.48	1 1
12176	Character Patterns (Act 1)	7	12245	42.06	5 5
12156	Half of the half	11	13811	31.99	4 2
12026	Test 1	7	28177	45.76	3 3
2730	Life, the Universe, and Everything (Interactive)	4	7655	20.22	6 1
2135	SPOJ Custom Test	9	10778	44.94	32 32
1181	Obfuscated Property	1	8	0.74	34 50