Sphere Online Judge (SPOJ)

list of tutorial problems (unsolved)

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
13949	Binary Input and Output	1	18	36.63
13082	BINARY CHALLENGE	3	287	32.24	17 26
24249	Binary Again	1	70	19.14	5 1
13391	Binary		63	39.81	1 1
2122	Billboard		18	27.63
7237	Biggest !	1	448	15.97	1 17
14205	Big Fibonacci		14	56.25
15268	Big Fact		14	33.33
13394	Big Dragons		31	48.06	1 1
37365	Biểu thức hậu tố	1	20	25.00
3916	Bicolor	3	296	27.53	9 9
22398	BICIKLI		21	23.28
25903	Bhadra Da and Counting "wow"		47	53.17	1 1
25211	BG and WOW Cities!!	3	22	55.56	17 12
10360	BF writing	1	21	59.32
25754	Best Two		34	10.24	1 1
26807	Best Students	-1	76	37.00	1 1
9501	Best balanced diet		11	20.69
14744	Beautiful Numbers	1	500	57.59	9 9
16510	Baza		14	100.00
7267	Basics		3	57.14
25966	Base Is Damn Easy	-2	21	47.17	1 1
21598	BASE FIGHT	1	28	31.87	1 1
19134	Base Conversion (Easy)		25	63.74
34008	Base and Power	2	117	29.10	17 9
11031	Bank Robbers	-1	155	46.72	1 1
26803	Balloons for All	-2	81	30.34	1 1
25190	Balloons		27	10.82	34 1
13385	Balanced Bracket Expression		23	20.42
15064	Bacteria(Easy)		6	54.55
26786	Bacteria in The Pond	1	11	26.87	17 17
16551	Backwards alphabetized epigrams		13	53.57
8524	Back to High School Physics		435	85.82
13677	Azooz		243	55.48
18035	Aya the new contestant	-2	6	18.52	17 34
26683	AVL Tree	7	676	25.20	15 6
8373	AVION		1443	41.64
8459	AVERYEASYPROBLEM		71	57.87
8468	AVERAGE	1	1266	38.02	6 6
19702	Average	-1	41	88.00	1 1
14038	Autumn Leaves (Easy)		20	91.49
22797	Automated Dispatch		19	95.65
2630	Autoarchive		8	33.33
11203	Auris Love		34	19.69
26621	Atul and Aastha Chronicles 1	9	497	38.52	6 5
37643	Attack System		14	20.83
18039	Atito’s family		39	64.94
21168	At random		306	38.47
29453	ASCII Text Art		26	62.79
13874	ASCII Art	1	27	30.77