Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
35955	Sort For Fun		6	46.67
35989	Pascal Triangle		7	27.66
36341	Sum Input-Output Practice		112	8.86
36961	Vùng bao lớn nhất		20	18.45
36981	Đào vàng remix		19	27.37
37176	Truy vấn ma trận		13	26.13
37274	Truong Van Phong		0	0.00
37312	Chuỗi đối xứng 1		10	47.17	1 1
37313	Chuỗi đối xứng 2		10	42.86
37314	Chuỗi đối xứng 3		6	38.10
37630	Caesar Cipher		11	42.31
37631	Wifi Password		13	51.61
37642	Biometrics Authentication		10	58.33
37643	Attack System		8	18.31
37644	Password Cracking		30	29.06
40456	RAU A		0	0.00
40750	Parity Issue		1	10.00
41030	FIFA SOCCER		9	31.25	1 1
41231	Python junior testing his keyboard		6	33.33
41254	Clean Robot		7	50.00
41435	Sleepwork		13	65.22
41442	Sleepwork		10	61.90
511	Easy Sorting	1	1824	40.16	4 4
732	Johnsons Algorithm	1	71	47.41	17 17
762	Problems Collection (Volume 1)	1	154	47.44	1 17
851	Tickets lottery	1	453	47.44	1 1
1023	Arranging Dominoes	1	668	41.05	1 1
1397	Put Them on a Circle	1	117	33.17	1 17
1680	Black and white painting	1	166	58.26	9 9
1682	Deli Deli	1	389	51.75	17 17
2524	Conversions	1	3113	48.20	6 1
2912	Super Primes	1	276	36.81
3081	Look and Say	1	274	56.22	1 17
3252	Persistent Bits	1	28	57.14	17 17
3695	n-th Power	1	161	51.46	17 17
4001	JACKPOT	1	218	45.95	1 1
4522	Adding Base36 BigNumbers	1	55	34.33
4762	Desde Hasta	1	198	33.37	17 17
4873	ABC Blocks	1	99	55.14	17 17
4906	Pythagorean Triples	1	1003	60.28	1 1
4907	Most Common Letter	1	222	41.22	1 1
5012	Spanish Conjugation	1	74	36.56	17 1
5194	Robbery	1	277	58.34	17 17
5873	Rnumber	1	10	28.00	17 17
6651	Snapper Chain	1	65	45.30
6654	Lexicographic Order 2	1	43	33.95	17 17
7129	Happy Telephones	1	253	49.23
7207	Alchemy	1	2232	39.88	1 1
7236	The next odd number	1	469	47.63	1 1
7237	Biggest !	1	448	15.98	1 17

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