import sys

sys.setrecursionlimit(10**6)
int1 = lambda x: int(x)-1
p2D = lambda x: print(*x, sep="\n")
def II(): return int(sys.stdin.buffer.readline())
def LI(): return list(map(int, sys.stdin.buffer.readline().split()))
def LI1(): return list(map(int1, sys.stdin.buffer.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def BI(): return sys.stdin.buffer.readline().rstrip()
def SI(): return sys.stdin.buffer.readline().rstrip().decode()
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
inf = 10**16
md = 998244353
# md = 10**9+7

abc=LI()
l0,s0=SI().split()
l1,s1=SI().split()
s0,s1=int(s0),int(s1)

i="ABC".index(l0)
a=abc[i]
i="ABC".index(l1)
b=abc[i]

mn=min(abc)
ans=inf
if l0==l1:ans=abs(s0-s1)
ans=min(ans,s0+s1-1)
ans=min(ans,a-s0+1+b-s1)
ans=min(ans,s0+mn+b-s1)
ans=min(ans,a-s0+mn+s1)

print(ans)