#include <bits/stdc++.h>
using namespace std;
int main(){
	long long x;
	char a, b;
	cin >> x >> a >> b;
	int y = 10;
	if (a > b) swap(a, b);
	if (a == 'B') {
	  if (b == 'C') {
	    y = 6;
	  }
	  else {
	    y = 8;
	  }
	}
	else if (b == 'C') {
	  y = 7;
	}
	cout << x / 10 * y << endl;
}