#include <bits/stdc++.h>
using namespace std;
long long x,y;
char a,b;

int main(){
    cin>>x>>a>>b;
    if(b<a) swap(a,b);
    if(a=='B'&&b!='C') y=8;
    else if(a!='B'&&b=='C') y=7;
    else if(a=='B'&&b=='C') y=6;
    x*=y/10;
    cout<<x;
    return -0;
}
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