#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<n;i++)
using namespace std;
using ll =  long long ;
using P = pair<int,int> ;
using pp = pair<bool,bool>;
const int INF = 1e9;
const int MOD = 1000000007;

int main(){
    int x,y,z;
    cin >> x >> y >> z;
    char S,T;
    int s,t;
    int ans;
    cin >> S >> s >> T >> t;
    if(S == 'A' && T =='B'){
        ans = min({s+t-1,x-s+y-t+1,t+z+x-s,s+z+y-t});
    }else if(S == 'B' && T == 'A'){
        ans = min({s+t-1,x-t+y-s+1,s+z+x-t,t+z+y-s});
    }else if(S == 'B' && T == 'C'){
        ans = min({s+t-1,y-s+z-t+1,s+x+z-t,y-s+x+t});
    }else if(S == 'C' && T == 'B'){
        ans = min({s+t-1,y-t+z-s+1,t+x+z-s,y-t+x+s});
    }else if(S == 'A' && T == 'C'){
        ans = min({s+t-1,x-s+z-t+1,s+y+z-t,x-s+y+t});
    }else if(S =='C' && T == 'A'){
        ans = min({s+t-1,x-t+z-s+1,t+y+z-s,x-t+y+s});
    }else if(S == 'C' && T =='C'){
        if(s > t) swap(s,t);
        ans = min({t-s,s+z-t+x,s+z-t+y});
    }else if(S == 'B' && T =='B'){
        if(s > t) swap(s,t);
        ans = min({t-s,s+y-t+x,s+y-t+z});
    }else if(S == 'A' && T =='A'){
        if(s > t) swap(s,t);
        ans = min({t-s,s+x-t+y,s+x-t+z});
    }
    cout << ans << endl;
    return 0;
}