#include <cstdlib>
#include <cstdio>
#include <cmath>
#include <cstring>
#include <climits>
#include <cctype>
#include <cassert>
#include <iostream>

using namespace std;

pair<int, int> stringToCoordinates(string s) {
	int coord1 = s[0] - 'a';
	int coord2 = s[1] - '0';
	if (s.length() == 3)
		coord2 = 10*coord2 + s[2] - '0';
	coord2--;
	return make_pair(coord1, coord2);
}

bool areOnLine(pair<int,int> p1, pair<int,int> p2) {
	if (p1.first == p2.first)
		return true;
	if (p1.second == p2.second)
		return true;
	if (p1.first-p1.second == p2.first-p2.second)
		return true;
	return false;
}

int main (void) {
	string s1, s2;
	cin >> s1 >> s2;
	pair<int, int> p1 = stringToCoordinates(s1);
	pair<int, int> p2 = stringToCoordinates(s2);
	
	int sol = 0;
	// Go through board
	for (int i = 0; i < 11; i++) {
		int minj = max(0, i-5);
		int maxj = min(10, 5+i);
		for (int j = minj; j <= maxj; j++) {
			pair<int, int> p3 = make_pair(i,j);
			if ( (p3 != p1) && (p3 != p2) )
				if ( (areOnLine(p1,p3)) and (areOnLine(p2,p3)) )
					sol++;
		}	
	}
	cout << sol << "\n";
	
	return 0;
}