a, b, c = map(int,input().split())
S = input().split()
s = int(S[1])
G = input().split()
g = int(G[1])

l = []
if S[0] == G[0]:
    if s > g:
        s, g = g, s
    if S[0] == 'B':
        a, b, c = b, a, c
    elif S[0] == 'C':
        a, b, c = c, b, a
    l.append(g-s)
    l.append(s+c+(a-g))
    l.append(s+b+(a-g))

else:
    if S[0] == 'A' and G[0] == 'B':
        a, b, c = a, c, b
    elif S[0] == 'B' and G[0] == 'A':
        a, b, c = b, c, a
    elif S[0] == 'B' and G[0] == 'C':
        a, b, c = b, a, c
    elif S[0] == 'C' and G[0] == 'A':
        a, b, c = c, b, a
    elif S[0] == 'C' and G[0] == 'B':
        a, b, c = c, a, b
    l.append((s+g-1))
    l.append(((a-s)+(c-g)+1))
    l.append(((a-s)+b+g))
    l.append((s+b+(c-g)))

print(min(l))