#include <iostream>
#define llint long long

using namespace std;

llint x, y, z;
char Sc, Tc;
llint Sid, Tid;

int main(void)
{
	cin >> x >> y >> z;
	cin >> Sc >> Sid;
	cin >> Tc >> Tid;
	
	if(Sc == Tc){
		if(Sid > Tid) swap(Sid, Tid);
		if(Sc == 'C') swap(x, z);
		if(Sc == 'B'){
			cout << min(Tid-Sid, Sid+(y-Tid)+min(x, z)) << endl;
			return 0;
		}
		cout << min(Tid-Sid, Sid+(x-Tid)+min(y, z)) << endl;
		return 0;
	}
	else{
		if(Sc == 'B'){
			swap(Sc, Tc);
			swap(Sid, Tid);
		}
		if(Sc == 'C'){
			swap(x, z);
		}
		
		if(Tc == 'B'){
			llint ans = min(Sid+Tid-1, (x-Sid)+(y-Tid)+1);
			ans = min(ans, min((x-Sid)+z+Tid, Sid+z+(y-Tid)));
			cout << ans << endl;
			return 0;
		}
		llint ans =  min(Sid+Tid-1, min(Sid+y+(z-Tid), (x-Sid)+(z-Tid)+1));
		ans = min(ans, (x-Sid)+y+Tid);
		cout << ans << endl;
	}
	
	return 0;
}