n = int(input())
if n == 1 or n == 2 or n == 4:
    print(-1)
else:
    a, b = n // 3, n % 3
    ans = []
    if b == 0:
        ans = [a, a, a]
    elif b == 1:
        ans = [a, a, a + 1]
    else:
        ans = [a, a + 1, a + 1]
    print(*ans)