WTF?

题意翻译

求下面这个伪代码的输出结果。 $$ \begin{array}{ll} 1 & \textbf{Input. } \text{An integer } \texttt{TUX} \text{.} \\ 2 & \texttt{FOO} \leftarrow 0,\texttt{BAR} \leftarrow 0,\texttt{BAZ} \leftarrow 0,\texttt{QUZ} \leftarrow 1. \\ 3 & \textbf{for } i\gets 1\textbf{ to }\texttt{TUX}\\ 4 & \qquad \textbf{Input. }\text{An integer }\texttt{PUR}.\\ 5 & \qquad\texttt{FOO} \gets \texttt{FOO}+\texttt{PUR}\\ 6 & \qquad\texttt{BAR} \gets\texttt{BAR}+1\\7 & \qquad\textbf{if}\ \ \texttt{FOO} \times \texttt{QUZ}>\texttt{BAZ}\times \texttt{BAR}\\ 8 & \qquad\qquad\qquad \texttt{BAZ }\gets \texttt{FOO}\\ 9 & \qquad\qquad\qquad \texttt{QUZ}\gets\texttt{BAR}\\10&\textbf{Output. }\text{An real number }\dfrac{\texttt{BAZ}}{\texttt{QUZ}}.\\ \end{array} $$

题目描述

``` 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 ```

输入输出格式

输入格式

The input contains between 1 and 10 lines, $ i $ -th line contains an integer number $ x_{i} $ $ (0<=x_{i}<=9) $ .

输出格式

Output a single real number. The answer is considered to be correct if its absolute or relative error does not exceed $ 10^{-4} $ .

输入输出样例

输入样例 #1

3
0
1
1

输出样例 #1

0.666667