Sphere Online Judge (SPOJ)

list of tutorial problems (unsolved)

ID	NAME	USERS	ACC %	DIFFICULTY C I
11382	Quadra vs PussyCat	63	51.31
11387	Perfect Cover	88	33.01	1 1
11398	Do You know your Algorithms	441	51.63
11457	New iPad	245	64.19
11464	Book Shelves(tutorial)	23	18.52
11492	Fast Schedule	270	50.65
11506	ANYTHING FOR ATTENDANCE	49	51.56
11559	Are you smart enough	27	56.14
11567	Find the missing card	54	45.51
11572	A Famous Music Composer	352	39.84
11581	The Famous Clock	136	56.95
11600	Another Mathematical Problem	101	35.23
11643	Cross dangerous minefields	14	33.33
11722	HELP ABHISHEK	51	50.80
11728	Forest Fires	223	41.49
11732	CARTONES CREDECRECIENTES	28	56.67
11788	Ishika and Kashish	2	6.25
11791	Integer Factorization With A Twist	32	24.70
11876	Finding Majority	294	43.70	1 1
11877	Upcoming Demons	24	25.22
11902	Bit Maker	25	21.07
11934	PUT TRINOMO	178	30.82
11961	Party trouble	70	29.19
11976	Permutation	26	33.90
11980	Sequence	322	29.86
11989	Factorial large	23	20.26
11990	Measuring Water	101	27.85
11995	Family Problem	24	24.80
12071	Point Blank	39	35.29
12072	Playing With Bits	177	54.42
12074	Magical Ladders	20	28.92	1 1
12075	Encryption	9	31.82
12077	Secret Code	8	19.23
12078	Picking Weights	10	20.29
12083	Appetizer	125	51.05
12092	Dessert	120	45.83
12100	Main Course	8	16.67
12101	Entrée	149	50.23
12111	FirstProblem	114	59.40
12112	SecondProblem	69	94.29	1 1
12165	Encrypted String	13	13.83
12166	Reverse And Add	60	34.39
12167	Fibonacci starters	33	40.91
12168	APGP Tutorial	29	22.22
12169	General Number Series	63	30.30
12208	The Chain Reaction	20	36.92
12239	Natalia Got A Problem	24	40.32
12271	Speed test - Pyramid version	32	81.69
12272	Speed test - Cube version	34	71.05
12275	Meeting and Dating	153	35.19