Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
7560	F - Interesting Ranges		9	23.40
7561	Lexicographic position	1	33	33.86	42 26
7563	Hi6		36	17.56	26 26
7565	Another Sorting Algorithm	1	29	14.46	50 1
7566	Expected Cycle Sums		46	47.66
7567	Divisor Summation Powered	13	365	21.35	17 23
7579	Power Calculus		302	48.25	34 17
7581	The Best Name for Your Baby		10	34.38
7583	Cubic Eight-Puzzle	1	29	32.17	50 34
7586	Number of Palindromes	9	1373	46.41	13 13
7588	Wise And Miser	70	5453	67.68	8 10
7589	Cave Crisis		11	65.22
7599	Optimal Strategy for the ICPC		8	18.00
7600	Milk Trading	5	183	30.24	1 28
7602	New Game with a Chess Piece	4	227	31.27	17 34
7603	Fibonacci Factor	1	26	26.94
7623	Divisors VI	2	27	14.22	34 34
7627	Driving Direction		10	67.65
7628	Mathematics	2	64	28.57	17 17
7629	Building Ports		42	12.86
7630	SHOPPERS		148	36.54
7632	Architecture		18	22.92
7637	Road Map	3	78	54.68	20 20
7666	Telecommunications		22	24.75
7668	Pebble Solver	15	2002	50.40	8 11
7676	Sum of Digits	105	4882	38.55	17 20
7680	Electrical Engineering		16	34.64
7683	Powered and Squared	8	712	27.14	19 16
7685	Flowers	4	313	30.00	15 24
7691	Homo or Hetero	22	1655	36.27	15 11
7692	Chemistry		69	13.83
7693	Environmental Engineering		11	23.39
7696	Encryption	3	989	35.96	17 17
7704	Civil Engineering	1	635	44.70	9 26
7709	Jumping Zippy	3	66	54.61	26 34
7718	Number of common divisors	86	7123	24.35	12 13
7733	Happy Numbers I	89	9378	53.38	8 8
7734	Twist and whirl - want to cheat	8	239	45.31	24 17
7737	Escape		55	33.68
7739	Sound	12	480	33.75	20 17
7740	Fence		18	27.69
7741	Sequence	7	809	30.29	11 23
7742	Onotole needs your help	138	10120	41.06	4 11
7745	Bingo!		753	38.76	17 1
7746	Cocircular Points		61	17.54	42 17
7753	Happy Numbers II	3	648	15.92	23 17
7757	Flowers Flourish from France	12	3166	53.01	7 2
7758	Growing Strings		174	32.41
7759	Hyperactive Girl	1	106	39.75	26 26
7760	Kids’ Wishes	1	92	31.74	34 1

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