# Tk_flatten_uneven_for_integers.py

# Tk_flatten_uneven_for_integers.py

def oRGB(n):
    n = re.findall(r"-?\d+", str(n))
    return [int(z) for z in n]

print(oRGB(1))
print(oRGB([1,2]))
print(oRGB([1,2,[(3,4),5],[99,100],-1]))