Update 9.l

ここマイナス不要じゃない？
Merge pull request #2 from TenninYan/patch-1

Update 9.l
Merge pull request #35 from wkentaro/master

fix misc mistake in 9.l.
Update 9.l

なくても動いた。
Merge pull request #3 from TenninYan/patch-2

Update 9.l
Merge pull request #37 from wkentaro/patch-2

Small change
Revert "Update kadai2"

This reverts commit 662f9fcd992c50c73cfcaa748909daa1dc128c43.
Merge branch 'master' of https://github.com/utmech-2014/utmech-soft3 into wkentaro
Merge