Submission #21,470

2026-01-13 09:46:46

cpp17

Wrong answer 42/50

18ms

740 KiB

#include <iostream>

using namespace std;

int main()
{
    int n, k, x=0;
    cin>>n;
    cin>>k;
    int a[100000];
    for(int i=0; i<n; i++)
    {
        cin>>a[i];
        if(a[i]==1)
        {
            x++;
        }
    }
    if(x>=k)
        cout<<(x-(k-2))*(x-(k-1))/2;
    else cout<<0;
    
    
    
    
    
    

    return 0;
}

	Sum	Test	Verdict		Time	Memory
base	42/50
		1	Accepted	0/0	1ms	316 KiB
		2	Accepted	0/0	1ms	316 KiB
		3	Accepted	0/0	17ms	564 KiB
		4	Accepted	2/2	1ms	500 KiB
		5	Accepted	2/2	1ms	316 KiB
		6	Accepted	2/2	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	508 KiB
		11	Accepted	3/3	1ms	316 KiB
		12	Accepted	2/2	1ms	500 KiB
		13	Accepted	3/3	1ms	508 KiB
		14	Accepted	2/2	17ms	700 KiB
		15	Wrong answer	0/2	17ms	740 KiB
		16	Accepted	3/3	18ms	556 KiB
		17	Accepted	3/3	17ms	576 KiB
		18	Wrong answer	0/3	18ms	600 KiB
		19	Accepted	3/3	17ms	644 KiB
		20	Accepted	3/3	17ms	716 KiB
		21	Accepted	3/3	17ms	624 KiB
		22	Wrong answer	0/3	17ms	564 KiB