http://d.hatena.ne.jp/kencoba/20140417
の訂正。
a.
.
b.
.
is wrong answer because .
c.
if n is even.
if n is odd.
http://d.hatena.ne.jp/kencoba/20140417
の訂正。
a.
.
b.
.
is wrong answer because .
c.
if n is even.
if n is odd.