import math

S = int(input())

A = []
while S > 0:
    i = 0
    while True:
        k = int(math.floor(pow(S, 0.5))) - i
        if S - pow(k, 2) >= 0:
            break
        else:
            i += 1
    S -= pow(k,2)
    A.append(pow(k,2))
#    print(A,S,k,k**2)
    
print(len(A))
print(*A)