Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
3577	Parity	3	77	19.52	17 34
3578	Hashing	1	39	11.76	34 34
3581	Tree Similarity	1	25	48.63	34 34
3725	Taming a T-REX	1	145	44.58	34
3734	Periodni	2	563	36.38	26 34
3863	Area of circles	1	304	29.64	34 34
3897	Convex Polygons	2	119	30.29	17 34
3899	Finding Fractions	1	166	29.25	17 34
3902	Fight with functions	3	20	6.55	42 34
3912	Color a tree	1	215	26.93	17 34
3930	Group Partition	1	69	30.00	34 34
4000	GALLUP	1	64	44.44	17 34
4100	Sum of Vectors	-1	101	31.71	50 34
4155	OTOCI	2	469	44.94	26 34
4182	Candy (Again)	2	226	18.42	34 34
4195	GCD Determinant	1	267	45.53	1 34
4204	Showstopper	1	83	21.90	17 34
4305	Drilling	3	100	17.99	17 34
4306	The way to Bytemountain	1	29	41.25	34 34
4429	Spelling Lists	2	178	31.84	17 34
4456	Jumbo Airlines	2	74	39.18	34 34
4458	Rainbow	1	34	19.46	17 34
4569	Let go to the movies	-3	159	18.60	50 34
4656	Cross Mountain Climb	1	60	32.74	17 34
4667	Gremlins	3	52	28.15	28 34
4871	Bridge	1	154	24.16	1 34
4881	Words on graphs		103	11.39	34
4948	Integer Factorization (29 digits)	8	102	15.52	40 34
4951	Bridges! More bridges!	1	46	16.42	1 34
5196	Monotonous numbers	6	610	47.83	4 34
5296	Air Combat	-1	64	14.85	34
5467	Finding password	6	182	17.08	26 34
5468	Going to school	8	321	35.87	15 34
5511	Heavy Sequences	-1	82	18.23	34 34
5649	Divide Polygon	3	33	21.22	9 34
5673	Fractions on Tree ( reloaded !)	2	244	38.22	26 34
5830	Alternating Permutations	1	57	38.46	34 34
5911	Square-free Integers Factorization	1	20	39.51	17 34
5975	Travelling Knight	2	50	33.70	34 34
6035	Dinner	4	155	27.03	9 34
6072	Chocolate		153	21.22	17 34
6170	Homecoming	1	27	30.28	17 34
6221	Increasing Powers of K	4	352	27.41	24 34
6264	Rank of a Fraction	4	129	31.58	12 34
6299	Move Marbles	1	21	6.37	17 34
6340	ZUMA	6	461	44.40	17 34
6478	Hamster Flight 2	2	63	32.91	17 34
6578	Segment Tree	1	53	10.09	34 34
6622	Islands and Hotel Chains	2	61	9.54	45 34
6678	Load Testing		200	59.73	34 34

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