N = int(input())

C = 500
ans = [0] * C
for i in range(C // 2):
    ans[i * 2] = 1
now = 1
for i in range(1,9):
    c = i + 1
    t = 2 ** i
    for _ in range(t):
        if now < C:
            ans[now] = c
            now += 2
        else:
            break
print(*ans[:N],sep = "")