Submission #8,311

2024-01-14 17:07:26

cpp17

Accepted 50/50

19ms

4164 KiB

#include <iostream>

using namespace std;
typedef long long ll;

ll N, K, V, a, r;

int main()
{
    cin >> N >> K;
    for (ll n = 0; n < N; n++) {
        cin >> a;
        V += a == 1;
    }
    for (ll i = 0; i < V-K+1; i++) {
        r += V - K - i + 1;
    }
    cout << r << endl;
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	3ms	1744 KiB
		2	Accepted	0/0	3ms	2056 KiB
		3	Accepted	0/0	19ms	2196 KiB
		4	Accepted	2/2	2ms	2332 KiB
		5	Accepted	2/2	3ms	2460 KiB
		6	Accepted	2/2	3ms	2548 KiB
		7	Accepted	3/3	3ms	2796 KiB
		8	Accepted	3/3	3ms	2916 KiB
		9	Accepted	3/3	3ms	3036 KiB
		10	Accepted	2/2	3ms	3120 KiB
		11	Accepted	3/3	3ms	3116 KiB
		12	Accepted	2/2	3ms	3116 KiB
		13	Accepted	3/3	3ms	3120 KiB
		14	Accepted	2/2	17ms	3316 KiB
		15	Accepted	2/2	18ms	3524 KiB
		16	Accepted	3/3	19ms	3636 KiB
		17	Accepted	3/3	18ms	3740 KiB
		18	Accepted	3/3	19ms	3828 KiB
		19	Accepted	3/3	18ms	3832 KiB
		20	Accepted	3/3	19ms	3948 KiB
		21	Accepted	3/3	19ms	4036 KiB
		22	Accepted	3/3	19ms	4164 KiB