Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
3647	Moebius		2	2.36
3678	Cattle Bruisers		91	26.33
3679	Moo University - Emergency Pizza Order	-1	37	27.40
3693	Maximum Sum	59	6627	42.45	19 18
3713	Primitive Root	6	615	30.64	15 27
3723	Snooker	5	460	50.55	9 27
3724	Rainbow Ride	9	497	36.16	19 19
3725	Taming a T-REX	1	151	44.34	34
3732	Slikar	1	213	52.05	28 17
3733	Trezor		105	52.34
3734	Periodni	2	667	39.10	26 34
3749	Subset Sums	74	4224	26.66	17 20
3752	JEDNAKOST	12	601	18.45	23 21
3753	GONDOR	4	395	53.39	13 13
3754	MAJMUN	1	77	40.47	17 17
3762	Bread Tree		163	13.66
3763	George	15	528	52.53	19 18
3791	Street	8	669	51.43	10 13
3831	Lubenica	1	204	42.50	17 17
3832	Kruska	4	107	46.57	17 17
3833	Tresnja	1	128	52.33	42 42
3861	Laser Phones	31	1420	28.89	20 18
3863	Area of circles	1	314	29.41	34 34
3865	Reljef	3	94	39.09	26 17
3866	Finding Palindromes	7	257	19.62	19 23
3867	Who is The Boss		171	25.29
3868	Total Flow	11	1398	36.29	14 13
3870	Military Story	3	286	28.81	21 12
3871	GCD Extreme	82	3107	29.39	19 26
3872	Party At School	1	58	24.87	34 34
3876	Tablica	1	206	58.65
3877	Cvjetici	18	986	48.67	12 21
3878	Rectangles Perimeter	58	2702	49.87	12 14
3881	Majstor	1	735	53.98	4 4
3882	Cijevi	5	261	38.20	30 14
3883	LATGACH3	55	3205	56.47	10 20
3884	When (You Believe)		24	9.17
3885	Coins Game	92	5497	45.27	10 13
3889	Closest Number	1	195	30.29	34 26
3890	Rectangles Counting		175	33.61
3893	Space settlement		67	31.56
3894	Bouncing Balls		28	31.54
3895	Matrix Game		26	21.77
3896	Maximal Independent Set	2	61	25.19	34 42
3897	Convex Polygons	2	124	30.86	17 34
3898	Even Palindrome	-1	251	10.23
3899	Finding Fractions	1	174	29.46	17 34
3900	MinCut Query		78	28.99
3901	Black and White Nim		55	39.23
3902	Fight with functions	3	21	6.47	42 34