#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) begin(v),end(v)
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
using ll = long long;
using pii = pair<int, int>;
constexpr ll INF = 1ll<<30;
constexpr ll longINF = 1ll<<60;
constexpr ll MOD = 1000000007;
constexpr bool debug = false;
//---------------------------------//

int main() {
	int X[3];
	REP(i, 3) cin >> X[i];
	char S[2];
	int T[2];
	REP(i, 2) scanf(" %c %d", S + i, T + i);
	
	int ans = ~(~0<<31);
	int l = T[0], r = X[S[0] - 'A'] + 1 - T[0];
	REP(i, 3) chmin(r, l + X[i]);
	REP(i, 3) chmin(l, r + X[i]);
	chmin(ans, l + T[1] - 1);
	chmin(ans, r + X[S[1] - 'A'] - T[1]);
	if (S[0] == S[1]) chmin(ans, abs(T[1] - T[0]));
	cout << ans << endl;
}