Submission #14,867

2025-02-05 10:19:07

cpp17

Accepted 50/50

19ms

1020 KiB

#include <bits/stdc++.h>
using namespace std;

int main() {
	int n,k;
	cin >>n>>k;
	vector<int> v(n);
	for(int i=0;i<n;i++)cin >>v[i];
	long long ans=0;
	int cnt=0;
	for(int i=0;i<n;i++){
		if(v[i]==1){
			cnt++;
			if(cnt>=k) ans+=cnt-k+1;
		}
	}
	cout <<ans;
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	1ms	316 KiB
		2	Accepted	0/0	1ms	316 KiB
		3	Accepted	0/0	18ms	820 KiB
		4	Accepted	2/2	1ms	512 KiB
		5	Accepted	2/2	1ms	316 KiB
		6	Accepted	2/2	1ms	508 KiB
		7	Accepted	3/3	1ms	508 KiB
		8	Accepted	3/3	1ms	316 KiB
		9	Accepted	3/3	1ms	404 KiB
		10	Accepted	2/2	1ms	404 KiB
		11	Accepted	3/3	1ms	404 KiB
		12	Accepted	2/2	1ms	316 KiB
		13	Accepted	3/3	1ms	316 KiB
		14	Accepted	2/2	17ms	896 KiB
		15	Accepted	2/2	17ms	844 KiB
		16	Accepted	3/3	19ms	904 KiB
		17	Accepted	3/3	17ms	832 KiB
		18	Accepted	3/3	19ms	820 KiB
		19	Accepted	3/3	18ms	1020 KiB
		20	Accepted	3/3	18ms	1000 KiB
		21	Accepted	3/3	19ms	924 KiB
		22	Accepted	3/3	18ms	848 KiB