#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  if (s[0] > 'a' && s[0] < 'h' && s[1] > '1' && s[1] < '8')
    cout << 8;
  else if (s[0] == 'a' || s[0] == 'h') {
    if (s[1] == '1' || s[1] == '8')
      cout << 3;
    else
      cout << 5;
  } else if (s[1] == '1' || s[1] == '8') {
    if (s[0] == 'a' || s[0] == 'h')
      cout << 3;
    else
      cout << 5;
  }
}
