Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	CODE	USERS	ACC %
1	Life, the Universe, and Everything	TEST	17647	39.29
2	Prime Generator	PRIME1	4526	15.22
3	Substring Check (Bug Funny)	SBSTR1	211	13.03
4	Transform the Expression	ONP	4329	51.98
5	The Next Palindrome	PALIN	2763	16.77
6	Simple Arithmetics	ARITH	741	15.28
7	The Bulk!	BULK	161	31.32
8	Complete the Sequence!	CMPLS	710	36.43
9	Direct Visibility	DIRVS	117	23.32
10	Complicated Expressions	CMEXPR	331	29.53
11	Factorial	FCTRL	5895	48.06
12	The Game of Master-Mind	MMIND	108	50.69
13	Hotline	HOTLINE	99	42.40
14	I-Keyboard	IKEYB	359	39.46
15	The Shortest Path	SHPATH	678	16.52
16	Sphere in a tetrahedron	TETRA	409	45.85
17	The Bytelandian Cryptographer (Act I)	CRYPTO1	294	33.05
18	The Bytelandian Cryptographer (Act II)	CRYPTO2	390	38.98
19	The Bytelandian Cryptographer (Act III)	CRYPTO3	73	39.34
20	The Bytelandian Cryptographer (Act IV)	CRYPTO4	20	7.11
22	Triangle From Centroid	TRICENTR	429	37.47
23	Pyramids	PIR	1015	38.65
24	Small factorials	FCTRL2	5027	37.41
25	Pouring water	POUR1	608	17.41
26	Build the Fence	BSHEEP	447	27.87
27	Sorting Bank Accounts	SBANK	1230	29.04
28	Help the Military Recruitment Office!	HMRO	263	13.01
29	Hash it!	HASHIT	780	25.51
30	Bytelandian Blingors Network	BLINNET	571	28.95
31	Fast Multiplication	MUL	354	12.70
32	A Needle in the Haystack	NHAY	910	37.85
33	Trip	TRIP	396	20.76
34	Run Away	RUNAWAY	120	31.86
35	Equipment Box	EQBOX	393	15.90
36	Secret Code	CODE1	118	31.34
37	The Proper Key	PROPKEY	101	29.95
38	Labyrinth	LABYR1	916	25.20
39	Piggy-Bank	PIGBANK	1210	35.10
40	Lifting the Stone	STONE	483	21.30
41	Play on Words	WORDS1	861	21.69
42	Adding Reversed Numbers	ADDREV	6346	51.59
43	Copying Books	BOOKS1	545	26.37
44	Substitution Cipher	SCYPHER	167	16.58
45	Commedia dell Arte	COMMEDIA	111	46.60
47	Skyscraper Floors	SCRAPER	156	17.34
48	Glass Beads	BEADS	842	42.86
49	Hares and Foxes	HAREFOX	65	22.79
50	Invitation Cards	INCARDS	319	44.02
51	Fake tournament	TOUR	296	19.10
54	Julka	JULKA	3229	35.09