import sys


def main():
    input = lambda: sys.stdin.readline()[:-1]
    S = int(input())

    ans, n = [], S
    while n:
        x = int(n**0.5) ** 2
        ans.append(x)
        n -= x

    print(len(ans))
    print(*ans)


if not __debug__:
    f = open(sys.argv[1], "r")
    sys.stdin = f

main()