def C(n, r):
    if r>n:
        return 0
    return fact[n]//fact[r]//fact[n-r]

def F(n):
    res = 0
    
    for i in range(2, n, 3):
        res += C(n-1, i)
    
    return res

def G():
    res = 0
    c = ans.count('5')
    l = len(ans)
    
    if c%3==0:
        s = 2
    elif c%3==1:
        s = 1
    else:
        s = 0
        
    for i in range(s, L-l-1, 3):
        res += C(L-l-2, i)
    
    return res

N = int(input())
fact = [1]

for i in range(1, 30):
    fact.append(fact[-1]*i)

i = 3

while True:
    f = F(i)
    
    if N-f>0:
        N -= f
        i += 1
    else:
        break

L = i
ans = ''

for i in range(L):
    g = G()
    
    if N-g>0:
        ans += '5'
        N -= g
    else:
        ans += '3'

print(ans)