x, y, z = map(int, input().split())
s0, t0 = input().split()
t0 = int(t0)
s1, t1 = input().split()
t1 = int(t1)

if s0 == 'A':
    if s1 == 'A':
        ans = min(abs(t1-t0), t0+y+x-t1, t0+z+x-t1)
    elif s1 == 'B':
        ans = min(t0+t1-1, x-t0+y-t1+1, t0+z+y-t1)
    else:
        ans = min(t0+t1-1, x-t0+z-t1+1, t0+y+z-t1)
elif s0 == 'B':
    if s1 == 'A':
        ans = min(t0+t1-1, y-t0+x-t1+1, t0+z+x-t1)
    elif s1 == 'B':
        ans = min(abs(t1-t0), t0+x+y-t1, t0+z+y-t1)
    else:
        ans = min(t0+t1-1, y-t0+z-t1+1, t0+x+z-t1)
else:
    if s1 == 'A':
        ans = min(t0+t1-1, z-t0+x-t1+1, t0+y+x-t1)
    elif s1 == 'B':
        ans = min(t0+t1-1, z-t0+y-t1+1, t0+x+y-t1)
    else:
        ans = min(abs(t1-t0), t0+x+z-t1, t0+y+z-t1)

print(ans)