#include <stdio.h>
#include <stdlib.h>
int count_elegant_subarrays(int A[], int n, int k)
{
int result = 0;
for (int i = 0; i < n; i++)
{
int count[100001] = {0};
int max_count = 0;
for (int j = i; j < n; j++)
{
count[A[j]]++;
if (count[A[j]] > max_count)
{
max_count = count[A[j]];
}
if (max_count >= k)
{
result++;
}
}
}
return result;
}
int main()
{
int A_length, k;
scanf("%d %d", &A_length, &k);
int* A = (int*) malloc(A_length * sizeof(int));
for (int i = 0; i < A_length; i++)
{
scanf("%d", &A[i]);
}
int result = count_elegant_subarrays(A, A_length, k);
printf("%d\n", result);
free(A);
return 0;
}