n = int(input())
ans=[]

def judge(x):
    if x**2 <= n:
        return 1
    else:
        return 0

while n > 1:   
    ok=0
    ng=10**18
    while ng-ok > 1:
        mid = (ng+ok)//2
        if judge(mid):
            ok = mid
        else:
            ng = mid
    #print(ok)
    ans.append(ok**2)
    n = n - ok**2

if n % 2 :
    ans.append(1)
    print(len(ans))
    print(*ans)
else:
    print(len(ans))
    print(*ans)