N,K = map(int,input().split())
P = list(map(int,input().split()))
P = sorted(P, reverse = True)

def is_ok(x): # ボーダーをx点としたときに、合格者数がK以下であればTrue
    passer = 0
    for p in P:
        if p >= x:
            passer += 1
            if passer > K:
                return False
    return True

ng = 0
ok = 401

while abs(ng - ok) > 1:
    mid = abs(ng + ok) // 2
    if is_ok(mid):
        ok = mid
    else:
        ng = mid
        
ans = 0
for p in P:
    if p >= ok:
        ans += 1
        
print(ans)