#include <bits/stdc++.h>
using namespace std;

using lint = long long int;
using pint = pair<int, int>;
using plint = pair<lint, lint>;
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) ((lint)(x).size())
#define POW2(n) (1LL << (n))
#define FOR(i, begin, end) for (int i = (begin), i##_end_ = (end); i < i##_end_; i++)
#define IFOR(i, begin, end) for (int i = (end)-1, i##_begin_ = (begin); i >= i##_begin_; i--)
#define REP(i, n) FOR(i, 0, n)
#define IREP(i, n) IFOR(i, 0, n)
#ifdef LOCAL
#define eprintf(...) fprintf(stderr, __VA_ARGS__)
#else
#define eprintf(...) 42
#endif

lint abc_to_xyz(lint x,lint y,lint z,string abc){
    if(abc=="A")
        return x;
    if (abc == "B")
        return y;
    if (abc == "C")
        return z;
}

int main()
{
    lint x, y,z;
    cin >> x >> y >> z;

    lint ans, tmp;

    string s0, s1;
    lint t0, t1;
    cin >> s0 >> t0;
    cin >> s1 >> t1;
    lint i = t0;
    lint j = t1;
    lint s = abc_to_xyz(x, y, z, s0); //スタート路線の長さ
    lint g = abc_to_xyz(x, y, z, s1); //ゴール路線の長さ
    lint l = i - 1, r = s - i;
    lint goleft = min(l, r + min(min(x,y),z));
    lint goright = min(r, l + min(min(x, y), z));
    ans = min(goleft + j, goright + g - j + 1);
    


    if (s0 == s1)
    {
        ans = abs(j - i);
    }

    cout
        << ans << "\n";

    return 0;
}