Sphere Online Judge (SPOJ)

list of classical problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
37402	The Attack Titan	2	83	23.50	6 12
37420	Anti Hash	1	1	20.00	34 34
37422	Recurrence Power Sum	1	2	4.50
37443	Acronym II	1	3	7.14
37444	Anti Hash II	1	3	24.00
37446	Breaking Math	1	2	4.26
37474	Shuffling Problem	6	41	23.86	6 8
37475	Base Exploration	3	54	18.49	9 17
37476	Personal LCM	3	22	9.60	23 28
37514	A Summatory (Extreme)	1	8	12.16	17 34
37921	Birthday Present	1	4	66.67	34
37922	See you again?	1	14	32.86	17 17
38294	Square Pentagon	4	27	42.86	13 21
38331	Comet Number	3	23	30.22	8 11
38365	Asacoco Prescription		7	37.50
38389	Phasmophobia	1	9	52.17
38602	Unique Sequence	3	24	54.24	9 13
39219	Brenden Politeness Filter		12	72.00
39762	TABTABTAB		9	48.57
39786	Selling Greeting Cards	3	30	28.32	8 8
39924	Precious Prizes		3	20.00