S = int(input())

T = []
def f(X):
    if X == 0 and len(T) <= 15:
        print(len(T))
        print(*T)
        exit()
    
    if len(T) > 15:
        return
    
    a = int(X**0.5)
    for i in range(a, 0, -1):
        T.append(i*i)
        f(X - i*i)
        T.pop()
    
f(S)