Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	CODE	USERS	ACC %
55	Jasiek	JASIEK	213	27.73
56	Dyzio	DYZIO	559	32.55
57	Supernumbers in a permutation	SUPPER	327	33.53
58	Crime at Piccadily Circus	PICAD	366	15.08
59	Bytelandian Information Agency	BIA	121	14.13
60	The Gordian Dance	DANCE	46	18.62
61	Brackets	BRCKTS	407	17.98
62	The Imp	IMP	147	32.33
63	Square Brackets	SQRBR	539	58.89
64	Permutations	PERMUT1	794	52.63
65	Ball	BALL1	87	48.58
66	Cross-country	CRSCNTRY	470	64.55
67	Cutting out	CUTOUT	167	43.00
68	Expression	EXPR1	95	39.67
69	Moulds	MOULDS	61	39.77
70	Relations	RELATS1	145	41.81
71	Tree	TREE1	246	30.90
73	Bacterial	BAC	51	22.98
74	Divisor Summation	DIVSUM	2212	22.34
75	Editor	EDIT1	31	45.45
76	Editor Inverse	EDIT2	52	25.86
77	New bricks disorder	BRICKS	116	33.33
78	Marbles	MARBLES	937	27.98
82	Easy Problem	EASYPIE	283	36.31
83	Bundling	BUNDLE	19	35.48
84	Shortcut	SHORTCUT	138	37.84
85	Dice Contest	DICE1	26	30.00
86	November Rain	RAIN1	82	24.66
87	Football	FOOTBALL	35	28.26
88	Which is Next	TREE2	72	29.50
89	Hang or not to hang	HANGLET	56	25.19
90	Minimizing maximizer	MINIMAX	204	30.49
91	Two squares or not two squares	TWOSQRS	825	25.39
92	Cutting off Squares	CUTSQRS	117	43.75
94	Numeral System of the Maya	MAYA	1052	39.17
95	Street Parade	STPAR	1657	34.17
96	Shopping	SHOP	711	48.04
97	Party Schedule	PARTY	858	35.23
98	Dance Floor	DFLOOR	253	40.66
99	Bus	BUS	120	24.33
100	Tower of Babylon	BABTWR	550	56.88
101	Fishmonger	FISHER	416	44.47
102	GX Light Pipeline Inc	LITEPIPE	59	36.70
104	Highways	HIGH	189	27.37
105	Alice and Bob	ALICEBOB	124	33.94
106	Binary Stirling Numbers	BINSTIRL	455	38.27
107	Calendar of the Maya	MAYACAL	93	56.12
108	Decoding Morse Sequences	MORSE	241	29.36
109	Exchanges	EXCHNG	91	50.83
110	Fill the Cisterns	CISTFILL	290	39.85