def f(curr, end):
    if curr > end:
        return 0
    if curr == end:
        return 1
    if curr < end:
        return f(curr + 1, end) + f(curr * 2, end) + f(curr * 2 + 1, end)
print(f(4, 29))

a = [0] * 100
a[4] = 1
for i in range(4, 29):
    if i + 1 <= 29:
        a[i + 1] += a[i]
    if i * 2 <= 29:
        a[i * 2] += a[i]
    if i * 2 + 1 <= 29:
        a[i * 2 + 1] += a[i]
print(a[29])