import sys

sys.setrecursionlimit(10 ** 6)
def II(): return int(sys.stdin.readline())

def main():
    fac = [1]
    for i in range(1, 30): fac.append(fac[-1] * i)

    def nCr(n, r):
        if n < r: return 0
        return fac[n] // fac[r] // fac[n - r]

    def num(k, m):
        if (k, m) in memo: return memo[k, m]
        res = 0
        for c5 in range(m, k, 3): res += nCr(k - 1, c5)
        memo[k, m] = res
        return res

    memo = {}
    n = II()
    inf = 10 ** 9
    cnt = 0
    for k in range(inf):
        tmp = num(k, 2)
        if cnt + tmp >= n: break
        cnt += tmp
    n -= cnt
    c5 = 1
    ans = ""
    for i in range(k, 0, -1):
        cur = num(i - 1, -c5 % 3)
        if n - cur < 1:
            ans += "3"
        else:
            ans += "5"
            c5 += 1
            n -= cur
    print(ans)

main()