x,y,z=map(int,input().split())
s,t=map(str,input().split())
h,w=map(str,input().split())
t=int(t)
w=int(w)
if h<s:
    s,t,h,w=h,w,s,t
if s=="A":
    if h=="A":
        print(min(abs(t-w),x-abs(t-w)+min(y,z)))
    elif h=="B":
        print(min(t+w-1,x-t+y-w+1,t+y-w+z,x-t+w+z))
    else:
        print(min(t+w-1,x-t+z-w+1,t+z-w+y,x-t+w+y))
elif s=="B":
    if h=="B":
        print(min(abs(t-w),y-abs(t-w)+min(x,z)))
    else:
        print(min(t+w-1,y-t+z-w+1,t+z-w+x,y-t+w+x))
else:
    print(min(abs(t-w),z-abs(t-w)+min(x,y)))