N, K = map(int, input().split())
M = 10 ** 6 + 1
B = [0] * M
C = [0] * M
def A(a, w):
    while a < M:
        B[a] += w
        a += a & (-a)
def S(a):
    r = 0
    while a > 0:
        r += B[a]
        a -= a & (-a)
    return r
while N:
    N -= 1
    w = int(input())
    if w > 0:
        if S(M - w) < K:
            A(M - w, 1)
            C[w] += 1
    else:
        if C[-w] > 0:
            A(M + w, -1)
            C[-w] -= 1

print(S(M - 1))