#!/usr/bin/env python3
from math import *

n, e = map(int, input().split())

a = 0
for r in map(int, input().split()):
    if e > 2 * r:
        a += 1
        continue
    l = 0
    h = pi
    for _ in range(60):
        m = (l + h) / 2
        x = r * cos(m)
        y = r * sin(m)
        d = sqrt((r - x) ** 2 + y**2)
        if d > e:
            h = m
        else:
            l = m
    a += floor(2.000000001 * pi / h)
print(a)