#누적 합 prefix_sum

#	제목	푼 사람 수	평균 시도
26986	Corral the Cows	7	1.86
27838	Counting Subsequences	7	1.57
10751	COW	229	1.92
24615	Cow Camp	26	1.27
24979	COW Operations	92	1.53
27573	Creative Accounting	15	1.47
10624	Cube Coloring	33	1.55
30223	Cut the Cake	10	1.30
23012	Cutting Intervals	16	1.13
24986	Daily Turnovers	5	2.40
18202	Dance Circle	5	1.40
15244	Debug	29	1.52
8029	Density Map	34	1.35
20085	Detecting Molecules	59	2.69
27612	Determining Nucleotide Assortments	16	1.06
12003	Diamond Collector (Silver)	173	1.86
8208	Difference	66	3.47
19509	Different Sums	10	3.40
6168	Dining Cows	132	2.02
16663	Distance Sum	11	5.00
27575	Distinct Parity Excess	15	1.13
13076	Distinct rational numbers	157	1.55
22023	Distributing Candies	56	2.36
11854	Divide and conquer	24	2.25
15404	Divide and Conquer	33	2.12
29911	Dividing apples	24	1.67
21909	Divisible by 3	60	1.23
25427	DKSH를 찾아라	224	2.17
15324	Doktor	34	2.47
3324	Dominance	4	1.00
30557	Don't Be Fake	12	1.17
25729	Double-Colored Papers	6	3.50
24488	Drought	50	2.30
16210	DSHS Bank	88	3.27
18707	Dull Chocolates	7	1.14
20988	Dungeon 3	5	2.40
8675	Dwie wieże	30	1.83
7390	Easy Trading	26	1.50
14037	Eggscavation	6	1.17
20217	Eightgon	9	2.78
30361	Empty Quartz	10	1.20
17717	En-JOI-able Logo Design	38	1.76
18778	Equilateral Triangles	32	2.22
19157	Even Path	45	1.47
24581	Even Substrings	11	1.55
27577	Everything Is A Nail	11	1.36
20780	Evil Problemsetters	9	2.44
22268	Excellent Views	39	1.03
20905	Exhausting Errands	4	1.75
14616	Explore space	85	2.56

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