n, x0, x1, x2 = list(map(int, input().split()))
x0, x1, x2 = sorted([x0, x1, x2])
ans = n
a = 1
C = []
while a <= x2:
    if a in [x0, x1, x2]:
        C.append(a//2+1)
    a = a*2+1
for c in C:
    ans -= (n+c)//(2*c)
print(ans)