Submission #21,003

2026-01-12 07:26:53

python3

Accepted 50/50

37ms

4948 KiB

n, k = map(int, input().split())
fields = [int(i) for i in input().split()]
num = fields.count(1)
m = num - k + 1
res = m * (m+1) // 2 if m >= 0 else 0
print(res)

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	16ms	2868 KiB
		2	Accepted	0/0	16ms	2880 KiB
		3	Accepted	0/0	37ms	4940 KiB
		4	Accepted	2/2	16ms	2868 KiB
		5	Accepted	2/2	16ms	2868 KiB
		6	Accepted	2/2	17ms	3064 KiB
		7	Accepted	3/3	16ms	2868 KiB
		8	Accepted	3/3	16ms	2940 KiB
		9	Accepted	3/3	14ms	3036 KiB
		10	Accepted	2/2	14ms	2932 KiB
		11	Accepted	3/3	16ms	2868 KiB
		12	Accepted	2/2	16ms	2960 KiB
		13	Accepted	3/3	16ms	3020 KiB
		14	Accepted	2/2	34ms	4644 KiB
		15	Accepted	2/2	35ms	4676 KiB
		16	Accepted	3/3	35ms	4696 KiB
		17	Accepted	3/3	37ms	4616 KiB
		18	Accepted	3/3	35ms	4808 KiB
		19	Accepted	3/3	37ms	4948 KiB
		20	Accepted	3/3	37ms	4880 KiB
		21	Accepted	3/3	37ms	4780 KiB
		22	Accepted	3/3	34ms	4896 KiB