Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
35351	Curse the Recursion	3	93	16.21	6 12
35591	Somma tra due numeri		248	47.06	1 1
35641	Special Prime Number	1	23	36.13	17 17
35668	Stringa maiuscola	-2	109	35.46	1 1
35719	Query on an array I	-1	33	24.40	9 9
35722	Query on an array II	1	22	65.96	1 1
35734	Financial rookie		1	100.00
35772	Query	1	14	19.42	1 17
35773	Sum of Divisors	2	56	21.68	1 1
35791	KJ and street lights		22	19.05
35955	Sort For Fun		7	50.00
35989	Pascal Triangle		8	22.00
36341	Sum Input-Output Practice		116	9.12
36436	Dãy số cơ bản	1	9	81.25	1 1
36527	A not so good plan	-2	59	79.49	1 1
36961	Vùng bao lớn nhất		21	17.78
36963	Nobabs Treasure Hunt	-1	76	64.06	1 1
36981	Đào vàng remix		24	34.91
37166	Predicting the spread of viruses (EASY)	2	8	100.00	1 1
37176	Truy vấn ma trận		14	25.42
37249	Simple Calculator	2	40	29.22	1 1
37273	Simple Sum	3	221	44.76	12 12
37274	Truong Van Phong		0	0.00
37312	Chuỗi đối xứng 1		13	50.00	1 1
37313	Chuỗi đối xứng 2		13	48.39
37314	Chuỗi đối xứng 3		7	43.48
37365	Biểu thức hậu tố	1	13	20.00
37465	Do you know Factorials	1	11	20.00
37630	Caesar Cipher		12	48.28
37631	Wifi Password		14	53.12
37642	Biometrics Authentication		12	64.29
37643	Attack System		11	20.24
37644	Password Cracking		32	30.83
37851	Mã Caesar	-1	6	100.00
40456	RAU A		0	0.00
40750	Parity Issue		3	37.50
41030	FIFA SOCCER	-1	10	31.43	1 1
41231	Python junior testing his keyboard		8	39.13
41254	Clean Robot		11	48.78
41435	Sleepwork		14	66.67
41442	Sleepwork		12	65.22