CodeForce 710A King Moves

King Moves

　　The only king stands on the standard chess board. You are given his position in format "cd", where c is the column from ‘a‘ to ‘h‘ and d is the row from ‘1‘ to ‘8‘. Find the number of moves permitted for the king.

Check the king‘s moves here https://en.wikipedia.org/wiki/King_(chess).

King moves from the position e4

Input

　　The only line contains the king‘s position in the format "cd", where ‘c‘ is the column from ‘a‘ to ‘h‘ and ‘d‘ is the row from ‘1‘ to ‘8‘.

Output

　　Print the only integer x — the number of moves permitted for the king.

Example

Input

e4

Output

8

水题： 给出一个点求周围有几个点　　AC代码：

 1 # include <bits/stdc++.h>
 2 using namespace std;
 3 int main()
 4 {
 5     char ch1, ch2;
 6     scanf("%c%c", &ch1, &ch2);
 7     if(ch1 == ‘a‘ && ch2 == ‘1‘)
 8         printf("3\n");
 9     else if(ch1 == ‘a‘ && ch2 == ‘8‘)
10         printf("3\n");
11     else if(ch1 == ‘h‘ && ch2 == ‘1‘)
12         printf("3\n");
13     else if(ch1 == ‘h‘ && ch2 == ‘8‘)
14         printf("3\n");
15     else if(ch1 == ‘a‘ || ch1 == ‘h‘ || ch2 == ‘1‘|| ch2 == ‘8‘)
16         printf("5\n");
17     else
18         printf("8\n");
19     return 0;
20 }