作者查詢 / alan23273850
作者 alan23273850 在 PTT [ C_and_CPP ] 看板的留言(推文), 共320則
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12F推: 感謝樓上 長知識了 這世界真可怕 XD07/25 02:07
1F推: 不是放在 startup 資料夾就行了嗎05/21 21:53
1F推: https://ithelp.ithome.com.tw/articles/1019050502/24 19:51
2F→: 裝 Code Runner plugin,剩下的自行研究02/24 19:51
17F推: 可看知名大學教授所寫的投影片02/08 22:10
33F→: 我指台清交成,像我上清大周志遠教授的就不錯02/17 02:32
34F→: 可是我不確定 ilms 上面開不開放非校園人士下載02/17 02:32
35F→: 可能要去看一下02/17 02:32
16F推: 神奇給推!02/16 08:57
1F推: 這問題太專業,推一個02/02 21:49
7F→: 所以原PO如果發現改成graph coloring就能跟gcc比的02/03 02:24
8F→: 話是不是就可以生一篇 paper 了ㄋ02/03 02:24
15F推: 這題很有意義,真的有人寫爛code12/30 17:25
5F推: printf 只能吃字串,不能吃字元12/30 14:26
2F推: a 和 vec 都是名字11/22 15:05
3F→: 順帶一提這問題的水準跟IP很不符阿11/22 15:52
15F→: 原PO沒有說他念113阿11/22 20:22
16F→: 原來是生物大神,pointer是C就有的概念,reference11/22 20:23
17F→: 是C++才加進去的,可以先翻專門講C的書查指標意義,11/22 20:24
18F→: reference就純粹是別名,可以直接代表另一個變數11/22 20:24
1F推: 真神奇,我自己試出來也是 55,很肯定是從 double11/22 01:40
2F→: 轉成 long long 的問題,但是解釋不出理由11/22 01:40
3F→: 用 float 的話就沒錯11/22 01:43
6F→: https://goo.gl/5vCq8X 這邊有人有嘗試過11/22 01:47
8F→: 建議問問題前先餵狗 不過新手可能也不知道怎餵就是11/22 01:47
9F→: 給的小知識,新手都以為 double 的範圍很大,所以只11/22 01:48
10F→: 要不 overflow 就很安全,事實上不然,因為根據IEEE11/22 01:48
11F→: 754 標準,浮點數是採用科學記號表示法,既然是科學11/22 01:48
12F→: 記號,在 a*10^e 的 a 那邊位數一旦不夠就會產生11/22 01:49
14F→: rounding error,所以有沒有誤差跟數字大小未必有關11/22 01:49
15F→: 那 rounding error 會愈運算差愈多,所謂的誤差傳遞11/22 01:50
17F→: 這也就是為什麼你直接把 56.0 轉過去會對,但用運算11/22 01:50
18F→: 的方式會錯就是。11/22 01:50
19F→: clark大指的是 8*7*6/1/2/3 吧11/22 01:52
23F→: 他馬的大大說的就是 dynamic programming 解11/22 01:55
29F→: 喔喔 是我誤會clark大的意思ㄌ11/22 02:54
30F→: 順便提醒一下這種題目測資範圍會影響解法的一定要11/22 02:55
31F→: 給,不然就不是好題目11/22 02:55