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

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
    x = min(g-s, s+c+a-g, 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
    x = min(s+g-1, a-s+c-g+1, a-s+b+g, s+b+c-g)

print(x)