Submission #20,718

20718

2026-01-08 18:13:08

cpp17

Wrong answer 38/50

18ms

508 KiB

#include <iostream>
#include <vector>

using namespace std;


int main()
{
	int n, k, count = 0;
	cin >> n >> k;
	for (int i = 0; i < n; i++)
	{
		int x;
		cin >> x;
		if (x == 1)
		{
			count++;
		}
	}

	long long ans = (count - k + 1) * (count - k + 2) / 2;

	cout << ans;
}

	Sum	Test	Verdict		Time	Memory
base	38/50
		1	Accepted	0/0	1ms	508 KiB
		2	Accepted	0/0	1ms	316 KiB
		3	Accepted	0/0	17ms	316 KiB
		4	Accepted	2/2	1ms	316 KiB
		5	Wrong answer	0/2	1ms	316 KiB
		6	Wrong answer	0/2	1ms	316 KiB
		7	Accepted	3/3	1ms	316 KiB
		8	Accepted	3/3	1ms	316 KiB
		9	Accepted	3/3	1ms	316 KiB
		10	Accepted	2/2	1ms	316 KiB
		11	Accepted	3/3	2ms	316 KiB
		12	Accepted	2/2	1ms	316 KiB
		13	Accepted	3/3	1ms	316 KiB
		14	Accepted	2/2	17ms	508 KiB
		15	Wrong answer	0/2	17ms	396 KiB
		16	Accepted	3/3	17ms	400 KiB
		17	Accepted	3/3	17ms	404 KiB
		18	Wrong answer	0/3	18ms	392 KiB
		19	Accepted	3/3	17ms	316 KiB
		20	Accepted	3/3	17ms	316 KiB
		21	Accepted	3/3	17ms	404 KiB
		22	Wrong answer	0/3	17ms	316 KiB