Sphere Online Judge (SPOJ)

list of tutorial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
11990	Measuring Water		97	25.68
11995	Family Problem		24	23.58
11996	Medal Tally	1	24	51.72
12071	Point Blank		34	33.91
12072	Playing With Bits		172	54.99
12075	Encryption		7	21.21
12077	Secret Code		5	14.29
12078	Picking Weights		6	16.67
12081	Picture Perfect	1	18	29.17
12083	Appetizer		122	51.45
12092	Dessert		113	44.52
12100	Main Course		6	23.53
12101	Entrée		144	50.11
12111	FirstProblem		110	58.55
12165	Encrypted String		12	21.13
12166	Reverse And Add		54	33.33
12167	Fibonacci starters		28	39.56
12168	APGP Tutorial		23	19.57
12169	General Number Series		61	29.96
12208	The Chain Reaction		16	40.43
12239	Natalia Got A Problem		24	40.98
12271	Speed test - Pyramid version		28	82.81
12272	Speed test - Cube version		29	71.23
12275	Meeting and Dating		147	34.00
12282	Word or number (easiest 2)	-1	217	66.92
12289	Grid Travel		68	27.24
12395	Maximizing the equation		79	39.84
12410	No more Johnny		61	37.56
12454	Permutation		45	44.86
12455	Order		15	66.00
12456	NUMBER SERIES		77	43.75
12465	Shared Letters		94	69.62
12509	STRING PROBLEM		40	44.55
12510	JUMPING DORA		88	35.76
12607	Missing one		22	88.37
12608	Switch	1	26	81.19
12648	The Last Exam		7	44.44
12650	Even and Odd	1	60	35.68
12793	The power of two		105	51.00
12801	Browsing History		47	39.53
12823	Print Big Binary Numbers		17	63.38
12910	Addicted Numbers		146	30.28
13085	Game		157	68.31
13088	Free Palestine	-1	134	29.66
13115	Julius Caesar Cipher		19	29.87
13153	Fast Division		116	53.88
13154	Very Fast Division		18	48.54	17
13238	SAMPLE PROB		5	9.38
13385	Balanced Bracket Expression		21	22.61
13386	Rotations		14	31.15