#include "bits/stdc++.h"

using namespace std;

using ll = long long;
using ld = long double;

const double PI = 3.1415926535897932384626433832795;
const ll MOD = 1000000007;

const int dx[] = { 0, 1, 0, -1 };
const int dy[] = { -1, 0, 1, 0 };

int gcd(int x, int y) { return y ? gcd(y, x % y) : abs(x); }
ll gcd(ll x, ll y) { return y ? gcd(y, x % y) : abs(x); }
int lcm(int x, int y) { return x / gcd(x, y) * y; }
ll lcm(ll x, ll y) { return x / gcd(x, y) * y; }

ll f(ll x, ll y, ll z, string route) {
	if (route == "A") return x;
	if (route == "B") return y;
	if (route == "C") return z;
	return -1;
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);

	ll x, y, z;
	cin >> x >> y >> z;

	string s0, s1;
	ll t0, t1;
	cin >> s0 >> t0 >> s1 >> t1;

	ll start = t0;
	ll goal = t1;

	ll startRouteLen = f(x, y, z, s0);
	ll goalRouteLen = f(x, y, z, s1);

	ll left = start - 1;
	ll right = startRouteLen - start;
	ll goLeft = min(left, right + min(min(x, y), z));
	ll goRight = min(right, left + min(min(x, y), z));
	

	ll score = min(goLeft + goal, goRight + goalRouteLen - goal + 1);
	ll ans = s0 == s1 ? min(score, abs(goal - start)) : score;
	
	cout << ans << endl;
	return 0;
}