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#include <stdlib.h>
#include <stdio.h>
int cmp(const void *x, const void *y)
{
long tmp = *(long *) y - *(long *) x;
return tmp ? tmp / labs(tmp) : tmp;
}
int main()
{
int t, k, n, i;
long *s = malloc(10000 * sizeof(long));
scanf("%d\n", &t);
while (t--) {
scanf("%d %d\n", &n, &k);
for (i = 0; i < n; i++)
scanf("%ld", s + i);
qsort(s, n, sizeof(long), cmp);
for (i = k; i < n && s[k - 1] == s[i]; i++);
printf("%d\n", i);
}
return 0;
}
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