*Problem 0801 - HOJ_contest 2-1 small octagon [#uf45b2d6] [[prev>Problem 0800]] | [[next>Problem 0802]] #get_img(801) #br |Author|Limit|h |mas|20| #br **関連 [#u4532339] #br **コメント [#u7e9e5f2] #pcomment(reply)