Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
55	Jasiek	3	479	28.44	21 13
56	Dyzio	8	1225	31.47	11 14
57	Supernumbers in a permutation	22	1110	33.01	17 19
58	Crime at Piccadily Circus	3	651	14.03	31 21
59	Bytelandian Information Agency	2	421	19.64	17 23
60	The Gordian Dance	3	237	40.09	12 45
61	Brackets	178	5548	24.47	19 20
62	The Imp	1	300	31.14	17 23
63	Square Brackets	92	3887	56.74	14 18
64	Permutations	98	4410	52.18	12 20
65	Ball	2	159	35.03	17 23
66	Cross-country	38	4115	64.54	11 12
67	Cutting out	2	303	40.85	30 27
68	Expression		168	28.55	1 34
69	Moulds	2	136	34.99	12 12
70	Relations	2	254	28.80	9 17
71	Tree	3	465	28.80	12 9
73	Bacterial	1	75	18.54	50 17
75	Editor		51	26.94
76	Editor Inverse		69	15.98
77	New bricks disorder	1	290	37.79	17 17
78	Marbles	68	8225	34.99	15 13
82	Easy Problem	4	508	34.70	17 9
83	Bundling	1	57	34.04	17 17
84	Shortcut	1	237	31.56	17 9
85	Dice Contest		49	21.73	34 34
86	November Rain	4	301	17.60	21 21
87	Football	1	67	19.69	17 1
88	Which is Next	1	132	19.44	34 34
89	Hang or not to hang	1	66	15.60	17 17
90	Minimizing maximizer	3	389	24.84	17 26
91	Two squares or not two squares	79	6096	24.70	11 14
92	Cutting off Squares	-1	266	40.31	1 1
94	Numeral System of the Maya	4	2599	40.57	10 6
95	Street Parade	318	18622	29.08	14 11
96	Shopping	46	3099	44.18	15 11
97	Party Schedule	251	8956	36.23	14 16
98	Dance Floor	3	727	40.34	12 12
99	Bus		188	22.24	34 17
100	Tower of Babylon	45	3107	50.61	19 21
101	Fishmonger	48	2318	38.19	17 21
102	GX Light Pipeline Inc		80	31.17
104	Highways	2	821	20.59	23 28
105	Alice and Bob	3	179	26.74	42 42
106	Binary Stirling Numbers	3	2693	37.10	4 17
107	Calendar of the Maya	5	137	44.42	21 17
108	Decoding Morse Sequences	7	973	25.04	24 17
109	Exchanges	1	130	43.31	34
110	Fill the Cisterns	29	1424	31.41	21 20
112	Horizontally Visible Segments	1	162	27.39	17 34

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