// Dear maintainer: // // When I wrote this code, only god and // I knew how it worked. // Now, only god knows it! // // Once you are done trying to 'optimize' this routine, // and have realized what a terrible mistake that was, // please increment the following counter as a warning // to the next guy: // // total_hours_wasted_here = 25 // 引き継いだ人へ: // // これを書いたとき、なぜこれが動くのか理解してるのは神と自分だけだった。 // そして今