Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	CODE	USERS	ACC %
388	Menu	MENU	136	27.96
389	Use of Hospital Facilities	HOSPITAL	25	11.60
390	Billiard	BILLIARD	405	56.04
391	Railroads	RAILROAD	57	22.93
392	Spin	SPIN	23	24.78
393	Hexagon	HEXAGON	34	60.94
394	Alphacode	ACODE	1435	24.23
395	Anti-prime Sequences	APRIME	218	57.91
396	Hit or Miss	HITOMISS	91	48.90
397	I Conduit	CONDUIT	101	21.93
398	Roll Playing Games	RPGAMES	44	17.31
399	Team Rankings	TRANK	285	57.42
400	To and Fro	TOANDFRO	2693	59.88
401	Translations	TRANSL	89	38.26
402	Hike on a Graph	HIKE	245	41.45
403	Sort fractions	FRACTION	270	22.90
404	Scanner	SCANNER	41	12.71
405	Tin Cutter	TCUTTER	86	40.87
406	Logic	LOGIC	80	29.41
407	Random Number	RNUMBER	33	45.26
408	Jill Rides Again	JRIDE	362	37.21
409	DEL Command	DELCOMM	52	18.15
410	Variable Radix Huffman Encoding	VHUFFM	55	28.33
411	Number of quite different words	NUMQDW	132	34.98
412	K-path cover	COVER	87	18.30
413	Word Puzzles	WPUZZLES	121	19.12
414	Equatorial Bonfire	BONFIRE	52	40.70
416	Divisibility by 15	DIV15	543	14.59
417	The lazy programmer	LAZYPROG	139	21.60
418	Necklace	NECKLACE	32	23.44
419	Transposing is Fun	TRANSP	77	40.59
421	Another Road Problem	AROAD	56	27.43
422	Transposing is Even More Fun	TRANSP2	64	32.55
423	Assignments	ASSIGN	459	37.43
425	Kill evil instantly	HAJIME	31	5.76
428	Particular Palindromes	PARTPALI	214	32.67
449	Simple Numbers with Fractions Conversion	TCNUMFL	28	18.97
479	Permutation generator	TPERML	67	32.20
481	Roots of polynomial	KMSL4B	22	35.16
515	Collatz	CLTZ	78	66.80
518	Zig-Zag Permutation	ZZPERM	6	53.85
526	Divisors	DIV	187	45.87
530	Divisors 2	DIV2	118	57.32
598	Increasing Subsequences	INCR	99	34.60
660	Dungeon of Death	QUEST4	304	41.14
661	Nail Them	QUEST5	274	48.05
665	String it out	SUBS	321	43.27
666	Con-Junctions	VOCV	156	45.09
676	Sorting is not easy	LSORT	212	45.37
677	A place for the brewery	BROW	147	28.41