from math import factorial

def main():
    K = int(input())

    if not K:
        print(0)
        return

    for o in range(2, 30):
        one = (factorial(o) // factorial(o - 2)) // factorial(2)
        for z in range(30):
            zero = 2 ** z
            if zero * one == K:
                print(z + o)
                ans = '0' * z + '1' * o
                print(*ans)
                return

main()