Submission #8,468

2024-01-16 21:50:52

cpp17

Accepted 50/50

19ms

3584 KiB

#include <iostream>

using namespace std;
int N, K;
long long db1=0; //1-ek szama
//long long ered=0;
int x;
void be()
{
    cin>>N>>K;
    for(int i=1;i<=N;i++)
    {
        cin>>x;
        if(x==1)db1++;
        //db1+=x;
    }
}

int main()
{
    be();
    if(db1>=K) cout<<(db1-K+1)*(db1-K+2)/2;
    else cout<<0;
    return 0;
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	3ms	1872 KiB
		2	Accepted	0/0	3ms	2128 KiB
		3	Accepted	0/0	19ms	2364 KiB
		4	Accepted	2/2	3ms	2456 KiB
		5	Accepted	2/2	3ms	2664 KiB
		6	Accepted	2/2	3ms	2712 KiB
		7	Accepted	3/3	3ms	2956 KiB
		8	Accepted	3/3	3ms	2964 KiB
		9	Accepted	3/3	3ms	2960 KiB
		10	Accepted	2/2	3ms	2968 KiB
		11	Accepted	3/3	3ms	2964 KiB
		12	Accepted	2/2	3ms	3088 KiB
		13	Accepted	3/3	3ms	3176 KiB
		14	Accepted	2/2	17ms	3184 KiB
		15	Accepted	2/2	18ms	3336 KiB
		16	Accepted	3/3	19ms	3356 KiB
		17	Accepted	3/3	18ms	3472 KiB
		18	Accepted	3/3	19ms	3400 KiB
		19	Accepted	3/3	19ms	3456 KiB
		20	Accepted	3/3	19ms	3460 KiB
		21	Accepted	3/3	19ms	3576 KiB
		22	Accepted	3/3	18ms	3584 KiB