Sphere Online Judge (SPOJ)

list of tutorial problems (unsolved)

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
12395	Maximizing the equation		84	40.47
15833	Even and odd		84	73.94
16108	BOSSACT	2	84	54.91
27492	Eid Salami	1	84	32.95	1 23
509	6-Kolorowanie Grafów Planarnych		85	20.52
4543	Mysterio s Menace		85	39.08
11522	CHOCOLATES	1	85	41.58	1 1
20767	Simplest Pattern Search	-1	85	39.24	1 1
34098	Queues		85	60.67
34137	Memory Game 1		85	39.92	17 17
2459	Magic Program		86	61.63
2627	The Longest Chain		86	59.40
20748	Remove Duplicates		86	58.86
21741	Pipage		86	18.41
21746	Rooks and pawns		86	18.64
8354	Birthday cake		87	46.29	1 1
11514	N-ARY TREE	1	87	50.74
14206	Graph Cycle Detection	2	87	17.53	26 9
18143	Kimo and Divisors		87	26.28
34277	Dynamic Network		87	68.47
1279	Run Length Decoding		88	36.81	1 1
2626	RegExp Master	-1	88	36.72	34 17
8232	Fun With Primes	2	88	39.47	1 1
10601	Spiral numbers	1	88	50.00	9 9
11387	Perfect Cover		88	33.01	1 1
15299	Digit Dilemma		88	44.02
34213	Favourite Word	1	88	67.25	1 1
7273	Rank of a Permutation		89	49.55
8749	Waiting for Easter		89	34.99
732	Johnsons Algorithm	2	90	47.91	17 9
8911	FREE PATHS		90	39.61
11852	Power with Combinatorics(EASY)	3	90	23.43	26 26
12510	JUMPING DORA		90	36.31
19271	GRAVITY	2	90	18.54	17 17
19914	Fahrenheit		91	84.71
244	Internally Stable Sets		92	17.73
13880	GO FOR DIAMONDS	2	92	40.79	17 1
32445	COUNT JUMPS	1	92	41.63	4 1
12523	Nuts Frenzy		94	16.33	1 17
26957	Chain Smoker	2	94	29.97	11 11
11239	Number Theory (Easy)	2	95	37.05	17 26
21754	Shipyard	1	95	31.38	17 17
31182	Sub array Sum1	-1	95	32.67	1 17
34293	Flight		95	79.67
6192	H Function		96	36.88
12465	Shared Letters		96	68.83
21561	Amazing Subset		96	32.92
25712	Playing Game is Fun!	2	96	31.71	17 17
34580	Somma i numeri	-1	96	34.67	1 1
4788	MCD		97	75.17