2022-05-21から1日間の記事一覧
1 arithmetic square https://opt-pan.github.io/penpa-edit/?m=solve&p=1VS5bt0wEOz1GaxZ8BAvtTmqwEUOBAEhBC4CpEkRJ2n0YH+7Z48nk89fEOg97mgw3B3uEvrz+9/9ww/rHf1itYh4osv8b86GmpfuwOPZl26isSbwf3867p668caGfbkcH7fL8X3r+6M9vrzAT9vFrNls0Zq1ckhOgpfQOGR5y5F…