M=50
comb=[[0]*M for m in range(M)]
comb[0][0]=1
for i in range(M):
    for j in range(M):
        if i:
            comb[i][j]+=comb[i-1][j]
        if j:
            comb[i][j]+=comb[i][j-1]
def cnt(d,x):
    retu=0
    for c in range(d):
        if (c*5+x+5)%3==0:
            retu+=comb[d-1-c][c]
    return retu
d=0
N=int(input())-1
while cnt(d,0)<=N:
    N-=cnt(d,0)
    d+=1
ans_lst=[None]*d
ans_lst[0]=5
cur=0
for i in range(d-1,0,-1):
    if cnt(i,cur+3)<=N:
        N-=cnt(i,cur+3)
        ans_lst[i]=5
        cur+=5
    else:
        ans_lst[i]=3
print(*ans_lst[::-1],sep="")