*Problem 1546 - Contest 7-A p4 tetraflake [#v1a6ddb4] [[prev>Problem 1545]] | [[next>Problem 1547]] #get_img(1546) #br |Author|Limit|h |zephoria|40| #br **関連 [#m5d6a12c] #br **コメント [#v938aa1f] #pcomment(reply)