#include<bits/stdc++.h>
using lint=long long;
using real=long double;
int main(){
    std::cin.tie(nullptr);std::ios_base::sync_with_stdio(false);
    std::cout.setf(std::ios_base::fixed);std::cout.precision(15);
    lint a,b,c;std::cin>>a>>b>>c;
    char s0,s1;lint x,y;std::cin>>s0>>x>>s1>>y;
    std::vector<std::vector<std::pair<lint,lint>>>g(8);
    auto connect=[&](lint u,lint v,lint w){
        g.at(u).emplace_back(v,w);
        g.at(v).emplace_back(u,w);
    };
    connect(0,2,1);
    connect(0,4,1);
    connect(2,4,1);
    connect(1,3,1);
    connect(1,5,1);
    connect(3,5,1);
    if(s0==s1){
        if(s0=='B')std::swap(a,b);
        if(s0=='C')std::swap(a,c);
        if(x>y)std::swap(x,y);
        connect(0,6,x-1);
        connect(6,7,y-x);
        connect(7,1,a-y);
        connect(2,3,b-1);
        connect(4,5,c-1);
    }else{
        if(s1=='A')std::swap(s0,s1),std::swap(x,y);
        if(s0=='B')std::swap(a,b);
        if(s0=='C')std::swap(a,c);
        if(s1=='C')std::swap(b,c);
        connect(0,6,x-1);
        connect(6,1,a-x);
        connect(2,7,y-1);
        connect(7,3,b-y);
        connect(4,5,c-1);
    }
    lint inf=std::numeric_limits<lint>::max();
    std::vector<lint>dist(8,inf);
    using node_t=std::pair<lint,lint>;
    std::priority_queue<node_t,std::vector<node_t>,std::greater<>>que;
    que.emplace(0,6);
    dist.at(6)=0;
    while(!que.empty()){
        lint x=que.top().second;que.pop();
        for(auto&&[y,w]:g.at(x)){
            assert(dist.at(x)!=inf);
            lint d=dist.at(x)+w;
            assert(0<=d);
            if(dist.at(y)<=d)continue;
            dist.at(y)=d;
            que.emplace(dist.at(y),y);
        }
    }
    std::cout<<dist.at(7)<<'\n';
}