ls = list(map(int,input().split()))
S0,t0 = input().split()
S1,t1 = input().split()
l = 'ABC'
s = [l.index(S0),int(t0)-1]
g = [l.index(S1),int(t1)-1]
if s[0] == g[0]:
    a = ls.pop(s[0])
    ans = min(abs(s[1]-g[1]),a-abs(s[1]-g[1])+ls[0],a-abs(s[1]-g[1])+ls[1])
else:
    ans = min(s[1]+g[1]+1,ls[s[0]]-s[1]-1+ls[g[0]]-g[1]-1+1)
    aa = set([0,1,2])
    aa.remove(s[0])
    aa.remove(g[0])
    n = list(aa)[0]
    ans = min(ans,s[1]+ls[g[0]]-g[1]-1+ls[n]+1,g[1]+ls[s[0]]-s[1]-1+ls[n]+1)
print(ans)