from math import factorial as f
N = int(input()) - 1


def can(rem, need):

    return s - 1 <= N

for L in range(2, 100):
    s = sum(f(L) // f(k) // f(L - k) for k in range(2, L + 1, 3))
    if s <= N:
        N -= s
        continue
    ans = ""
    need = 2
    for i in range(L):
        rem = L - i - 1
        s = sum(f(rem) // f(k) // f(rem - k) for k in range(need, rem + 1, 3))
        if s <= N:
            ans += "5"
            need = (need + 3 - 1) % 3
            N -= s
        else:
            ans += "3"
    ans += "5"
    print(ans)
    break