Fe = [3, 5, 17, 257, 65537]
A = int(input())
ans = 0
x = 4
while x <= A:
    ans += 1
    x *= 2
for bit in range(1, 1 << 5):
    x = 1
    for i in range(5):
        if bit >> i & 1:
            x *= Fe[i]
    while x <= A:
        ans += 1
        x *= 2
print(ans)