Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
18915	Anils Proposal	2	26	18.54	50 50
19971	100pct failure in 72 hours	1	8	45.90	17 50
20167	Array with Hudai Calculation		46	23.92	50 50
20327	Triangles	1	28	27.33	50 50
21061	Yet Another Subset Sum Problem	2	44	45.09	50 50
21068	Popular	3	45	24.53	34 50
21683	Bhagat and String	2	29	34.51	34 50
22090	Prime Power Test (Hard)		11	21.80	50 50
22269	Periodic function, trip 1	1	13	33.96	17 50
25450	When Does The World End	1	4	4.67	34 50
26845	Daenerys wants to Conquer	1	6	48.15	50 50
26893	Pristojba	2	16	18.18	26 50
30945	Non Coprime Sequences	2	20	21.08	50 50
31971	NEO	1	10	3.60	34 50
31975	Ada and Scarecrow		14	16.86	50 50
32028	Ada and Parties		3	1.38	50 50
33039	Amazing Factor Sequence (hard)	2	17	61.72	50 50
33048	Find Linear Recurrence	4	23	34.48	42 50
33062	LCM Pesticide	1	6	30.00	50 50
35675	Primes in GCD Table (Hard)	2	9	30.77	50 50
36789	Linear Diophantine Equation	2	7	15.93	50 50
37446	Breaking Math	2	7	26.15	50 50
40501	A Simple Sieve	3	5	16.67	45 50
75	Editor		51	39.86
76	Editor Inverse		64	17.34
102	GX Light Pipeline Inc		75	30.85
146	Fast Multiplication Again		36	12.95
150	Where to Drink the Plonk?	1	494	34.80
175	Polygon		66	22.90
183	Assembler circuits		57	30.69
199	Empty Cuboids	-1	141	34.63
205	Icerink		8	12.94
231	The Zebra Crossing		12	2.67
241	Arranging the Blocks		52	13.04
261	Triangle Partitioning		199	58.22
275	The Water Ringroad		2	10.81
292	Alibaba	1	166	23.16
293	Officers on the Beat		11	21.43
296	Teamwork is Crucial		68	31.29
350	Landscaping	1	91	29.91
380	Bullshit Bingo		708	33.46
383	European railroad tracks		222	30.23
386	Help the problem setter		97	45.82
404	Scanner		56	12.24
418	Necklace		43	16.76
598	Increasing Subsequences		141	33.90
677	A place for the brewery		209	27.63
682	Pairs of Integers		203	25.59
696	Truth or not	1	268	21.64
697	Matrix Words		94	26.20

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