n = int(input())
c = 0
for i in range(10000, n + 1):
    w = i // 10000 % 10
    q = i // 1000 % 10
    b = i // 100 % 10
    s = i // 10 % 10
    g = i // 1 % 10
    if w % 2 == 0 and q % 2 == 0 and b % 2 == 0 and s % 2 == 0 and g % 2 == 0:
        c += 1
print(c)

/**************************************************************
	Problem: 1745
	User: admin
	Language: Python
	Result: Accepted
	Time:182 ms
	Memory:34480 kb
****************************************************************/