def asd(n):
    count = 0
    for i in range(1, n - 1):
        for j in range(i + 1, n - i):
            k = n - i - j
            if k > j and i!= j and j!= k and i!= k and '3' not in str(i) and '3' not in str(j) and '3' not in str(k) and '7' not in str(i) and '7' not in str(j) and '7' not in str(k):
                count += 1
    return count
n=int(input())
print(asd(n))