#include <bits/stdc++.h>
using namespace std;
template <typename Arg1>
void __f(const char* name, Arg1&& arg1) {
  cerr << name << " : " << arg1 << '\n';
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args) {
  const char* comma = strchr(names + 1, ',');
  cerr.write(names, comma - names) << " : " << arg1 << " |       ";
  __f(comma + 1, args...);
}
void FastIO() {
  ios_base::sync_with_stdio(0);
  cin.tie(NULL);
  cout.tie(NULL);
  cout.precision(15);
}
long long modpow(long long a, long long p, long long mod) {
  long long ret = 1;
  while (p) {
    if (p & 1) ret = (ret * a) % mod;
    a = (a * a) % mod;
    p /= 2;
  }
  return ret % mod;
}
long long power(long long a, long long p) {
  long long ret = 1;
  while (p) {
    if (p & 1) ret = (ret * a);
    a = (a * a);
    p /= 2;
  }
  return ret;
}
int main() {
  FastIO();
  string s;
  cin >> s;
  int ans = 8;
  if (s[0] == 'a' || s[0] == 'h') {
    ans -= 3;
    if (s[1] == '1' || s[1] == '8') ans -= 2;
  } else if (s[1] == '1' || s[1] == '8')
    ans -= 3;
  cout << ans << '\n';
  return 0;
}
