def f(i): z = strings[i] x = newlist(sizehint=13) x += z return "".join(x)
def f(i): z = strings[i] x = newlist(sizehint=13) x += z return ''.join(x)
def f(z): z = hlstr(z) x = newlist(sizehint=13) x += z return ''.join(x)