CF290C WTF?

``` HAI I HAS A TUX GIMMEH TUX I HAS A FOO ITS 0 I HAS A BAR ITS 0 I HAS A BAZ ITS 0 I HAS A QUZ ITS 1 TUX IS NOW A NUMBR IM IN YR LOOP NERFIN YR TUX TIL BOTH SAEM TUX AN 0 I HAS A PUR GIMMEH PUR PUR IS NOW A NUMBR FOO R SUM OF FOO AN PUR BAR R SUM OF BAR AN 1 BOTH SAEM BIGGR OF PRODUKT OF FOO AN QUZ AN PRODUKT OF BAR BAZ AN PRODUKT OF FOO AN QUZ O RLY? YA RLY BAZ R FOO QUZ R BAR OIC IM OUTTA YR LOOP BAZ IS NOW A NUMBAR VISIBLE SMOOSH QUOSHUNT OF BAZ QUZ KTHXBYE ```

输入包含 1 至 10 行，第 $i$ 行包含一个整数 $x_i$，满足 $0 \le x_i \le 9$。

输出一个实数。如果输出的答案与标准答案的绝对误差或相对误差不超过 $10^{-4}$，则视为正确。

由 ChatGPT 5 翻译