{"categories":["C\u3001C++"],"description":"project euler 66\u3092\u89e3\u3044\u3066\u3044\u3066\u529b\u4efb\u305b\u306a\u30b3\u30fc\u30c9\u3067unsigned long\u578b\u306ex\u306b\u3064\u3044\u3066x2\u3092\u8a08\u7b97\u3057\u305f\u3089\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3057\u3066\u3057\u307e\u3063\u305f\u3002 \u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u691c\u51fa\u3068\u3057\u3066\u306f\u4ee5\u524d\u5229\u7528\u3057\u305flimits.h\u3092\u30a4\u30f3\u30af\u30eb\u30fc\u30c9\u3057\u3066\u3001 #include<limits.h> if (x > ULONG_MAX / x) return 1; \u3068\u3059\u308b\u304b\u3001gcc\u306a\u3089-ftrapv\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u5229\u7528\u3059\u308b\u3002exit code\u306b\u3064\u3044\u3066\u306fhttp://tldp.org/LDP/abs/html/exitcodes.html\u3092\u898b\u308b\u3002 \u30e1\u30e2 \u624b\u5143\u3067\u5b9f\u884c\u3059\u308b\u5834\u5408\u306f\u591a\u500d\u9577\u6574\u6570\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u3044\u3046\u3082\u306e\u3092\u5229\u7528\u3059\u308b\u3068\u826f\u3055\u305d\u3046 C++\u3067\u591a\u500d\u9577\u6574\u2026","title":"\u6574\u6570\u306e\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u5bfe\u7b56","url":"https://takuyaokada.hatenablog.com/entry/20151021/1445358877","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","width":"100%","type":"rich","image_url":null,"version":"1.0","author_url":"https://blog.hatena.ne.jp/kuyata/","blog_title":"tak0kada\u306e\u4f55\u3067\u3082\u30ce\u30fc\u30c8","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftakuyaokada.hatenablog.com%2Fentry%2F20151021%2F1445358877\" title=\"\u6574\u6570\u306e\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u5bfe\u7b56 - tak0kada\u306e\u4f55\u3067\u3082\u30ce\u30fc\u30c8\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"kuyata","blog_url":"https://takuyaokada.hatenablog.com/","height":"190","published":"2015-10-21 01:34:37"}