from collections import defaultdict

n, K = map(int, input().split())
plst = list(map(int, input().split()))
dd = defaultdict(int)
for p in plst:
    dd[p] += 1
    
ans = 0
for k in sorted(dd.keys(), reverse = True):
    v = dd[k]
    if ans + v <= K:
        ans += v
    else:
        break
print(ans)