Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
34684	Secret Service Agent	4	30	42.98	24 17
34863	A Cumulative Sum Problem	5	30	21.70	34 42
2902	Candy IV		31	50.00	50 34
5147	Fire-Control System		31	18.97	34 17
5154	Cryptography Reloaded (Act II)		31	27.89
8108	POLYU		31	27.00
8326	Leaky containers		31	41.84
8330	Giant fountain	1	31	45.00	1 17
8894	Double Time	1	31	48.24	17 1
8971	LQDNUMBERS		31	36.44
9190	Perfect Maze		31	1.73
9242	B Beware, the end of the world	1	31	24.63	17 17
9443	Trial of Doom	1	31	51.52	17 34
11090	Large banner		31	33.63
11756	Teaming up for the competition	1	31	33.10	50 50
12370	Generating Alien DNA	1	31	18.18	34 34
12713	Strings		31	24.04	1 1
12981	Fences	3	31	24.14	26 30
13989	Helping Susy	1	31	28.92	17 17
14862	Union Laser	3	31	48.55	23 17
14905	Zig when you zag	4	31	30.26	30 38
14924	King Graffs Tolls	3	31	40.00	34 34
15734	California Jones and the Gate to Freedom	1	31	56.52	34 34
16483	Lucky Cities	2	31	16.67	17 26
18666	Radiation	1	31	18.65
19084	Huge Pascal triangle	1	31	44.44	9 34
20951	Pebbles	1	31	56.72	1 17
21854	TEMPLE_RUN	3	31	31.85	17 23
25889	Drawing Lines	3	31	20.16	23 17
27450	Changu with subsequences	8	31	37.17	17 24
31396	Binary Game Reloaded		31	49.33	1 34
31973	THE SHORTEST PATH	1	31	30.34	26 17
32567	First to meet the spaceship	1	31	12.76	34 17
900	Split Windows		32	57.63	17 1
3640	Hanoi Subway System Construction		32	41.75
4309	Circular game		32	19.89
5015	Decode the Castanets		32	40.19
6988	Beer Machines	5	32	18.72	43 37
7777	National Treasure		32	38.30
8056	Regex Edit Distance	2	32	40.62	34 42
8427	Permutation Game		32	41.05
8627	I2C		32	25.79
10071	Working at the Restaurant		32	37.78
10440	Friends		32	20.25
10461	The magical escape		32	53.33
10607	Delivery		32	25.64
12107	All Possible Barns	1	32	27.89	34 34
14032	Summer Game	2	32	42.02	17 17
15143	play with prime numbers (I)	5	32	19.10	23 23
19125	Hexadecimal value of Pi	2	32	56.59	26 34

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