{"image_url":null,"url":"https://kyopro-friends.hatenablog.com/entry/2024/03/18/192821","blog_url":"https://kyopro-friends.hatenablog.com/","published":"2024-03-18 19:28:21","categories":[],"provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkyopro-friends.hatenablog.com%2Fentry%2F2024%2F03%2F18%2F192821\" title=\"\u62e1\u5f35GCD\u306b\u3064\u3044\u3066 - kyopro_friends\u2019 diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","blog_title":"kyopro_friends\u2019 diary","version":"1.0","description":"\u30b9\u30ca\u30cd\u30b3\u3067\u3059\u3002\u62e1\u5f35GCD\u306b\u3064\u3044\u3066\u306e\u8cea\u554f\u306b\u7b54\u3048\u307e\u3059\u3002\u554f\u984c\uff1a \u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9f\u88c5\u3055\u308c\u305f extgcd\u304c\u3042\u308b\u3002 \u6574\u6570 \u304c \u3092\u6e80\u305f\u3057\u3001extgcd(a, b) \u306e\u8fd4\u308a\u5024\u3092 \u3068\u3057\u305f\u3068\u304d\u3001 \u304c\u6210\u308a\u7acb\u3064\u3053\u3068\u3092\u793a\u305b\u3002 def extgcd(a, b): # ax+by=gcd(x,y) \u3092\u6e80\u305f\u3059 (x,y) \u3092\u8fd4\u3059 if b == 0: return (1, 0) X, Y = extgcd(b, a % b) x = Y y = X - a // b * Y return (x, y) extgcd(a, b) \u304c\u300c \u3092\u6e80\u305f\u3059\u6574\u6570 \u3092\u8fd4\u3059\u3053\u3068\u300d\u306e\u8a3c\u660e\u306f\u7701\u7565\u3057\u307e\u3059\u3002\u6700\u521d\u306b\u88dc\u984c\u3092\u793a\u3057\u3066\u304a\u304d\u307e\u3059\u3002 \u88dc\u984c\u2605\uff1a 0 \u3067\u2026","type":"rich","title":"\u62e1\u5f35GCD\u306b\u3064\u3044\u3066","author_url":"https://blog.hatena.ne.jp/kyopro_friends/","width":"100%","author_name":"kyopro_friends","provider_name":"Hatena Blog"}