X,Y,Z=map(int,input().split())
S0,t0=input().split()
S1,t1=input().split()
t0=int(t0)-1
t1=int(t1)-1
if S0==S1:
    if S0=="B":
        X,Y=Y,X
    elif S0=="C":
        X,Z=Z,X
    if t0>t1:
        t0,t1=t1,t0
    ans=min(t1-t0,X-1-t1+t0+min(Y+1,Z+1))
else:
    XYZ=X+Y+Z
    dct={"A":X,"B":Y,"C":Z}
    X=dct[S0]
    Y=dct[S1]
    Z=XYZ-X-Y
    l0,r0=t0,X-1-t0
    l1,r1=t1,Y-1-t1
    ans=min(l0+l1+1,r0+r1+1,l0+r1+Z+1,r0+l1+Z+1)
print(ans)