Score : $200$ points

问题描述

在棋盘上定位一个棋子。

我们有一个包含8行和8列格子的网格。每个格子都有一个由以下方式确定的2字符名称。

• 左起第1列格子的名字的第一个字符是 a。类似地，左起第2列、第3列、……、第8列格子的名字的第一个字符依次是 b、c、d、e、f、g、h。
• 从底部数起第1行格子的名字的第二个字符是 1。同样地，从底部数起第2行、第3行、……、第8行格子的名字的第二个字符依次是 2、3、4、5、6、7、8。

例如，左下角的格子名为 a1，右下角的格子名为 h1，而右上角的格子名为 h8。

你将得到8个长度为8的字符串 $S_1,\ldots,S_8$，它们代表网格的状态。 其中，$S_i$ 的第 $j$ 个字符如果是 *，表示从顶部数起第 $i$ 行、从左边数起第 $j$ 列的格子上有一个棋子，否则为.。在 $S_1,\ldots,S_8$ 中，字符 * 出现恰好一次。请找出放置有棋子的格子的名字。

以上为通义千问 qwen-max 翻译，仅供参考。

Problem Statement

Locate a piece on a chessboard.

We have a grid with $8$ rows and $8$ columns of squares. Each of the squares has a $2$-character name determined as follows.

• The first character of the name of a square in the $1$-st column from the left is a. Similarly, the first character of the name of a square in the $2$-nd, $3$-rd, $\ldots$, $8$-th column from the left is b, c, d, e, f, g, h, respectively.
• The second character of the name of a square in the $1$-st row from the bottom is 1. Similarly, the second character of the name of a square in the $2$-nd, $3$-rd, $\ldots$, $8$-th row from the bottom is 2, 3, 4, 5, 6, 7, 8, respectively.

For instance, the bottom-left square is named a1, the bottom-right square is named h1, and the top-right square is named h8.

You are given $8$ strings $S_1,\ldots,S_8$, each of length $8$, representing the state of the grid.
The $j$-th character of $S_i$ is * if the square at the $i$-th row from the top and $j$-th column from the left has a piece on it, and . otherwise. The character * occurs exactly once among $S_1,\ldots,S_8$. Find the name of the square that has a piece on it.

Constraints

• $S_i$ is a string of length $8$ consisting of . and*.
• The character * occurs exactly once among $S_1,\ldots,S_8$.

Input

The input is given from Standard Input in the following format:

$S_1$

$S_2$

$S_3$

$S_4$

$S_5$

$S_6$

$S_7$

$S_8$

Output

Print the answer.

Sample Input 1

........
........
........
........
........
........
........
*.......

Sample Output 1

a1

As explained in the problem statement, the bottom-left square is named a1.

Sample Input 2

........
........
........
........
........
.*......
........
........

Sample Output 2

b3

update @ 2024/3/10 12:17:56