f = lambda t, c, *, _f=(lambda a, b, c: a + b + c): _f(*(unpack_tuple(2, t) + (c,)))

def unpack_tuple(n, t):
    t = tuple(t)
    if len(t) > n:
        raise ValueError('too many values to unpack (expected %d)' % (n,))
    if len(t) < n:
        raise ValueError('need more than %d values to unpack' % (len(t),))
    return t