import sys

sys.setrecursionlimit(10**7)
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int,sys.stdin.readline().rstrip().split())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LI2(): return list(map(int,sys.stdin.readline().rstrip()))
def S(): return sys.stdin.readline().rstrip()
def LS(): return list(sys.stdin.readline().rstrip().split())
def LS2(): return list(sys.stdin.readline().rstrip())


x,y,z = MI()
s,t0 = S().split()
t0 = int(t0)
g,t1 = S().split()
t1 = int(t1)

if s == g:
    if t0 > t1:
        t0,t1 = t1,t0
    if s == 'B':
        y,x = x,y
    if s == 'C':
        x,y = y,x
    ans = min(t1-t0,t0+min(y,z)+(x-t1))
    print(ans)
else:
    if s == 'B':
        x,y = y,x
    if s == 'C':
        x,z = z,x
    if g == 'A':
        x,y = y,x
    if g == 'C':
        y,z = z,y
    ans = min(t0+t1-1,(x-t0)+(y-t1),t0+z+(y-t1),(x-t0)+z+t1-1)
    print(ans)