def djkstra3(a,in_connect_list,v):
    out_shortest_list = [10**15 for i in range(v)]
    out_shortest_list[a] = 0
    searching_list = [a]
    
    while searching_list != []:
        new_search_list = []
        for i in searching_list:
            for c, d in in_connect_list[i]: 
                if out_shortest_list[c] > d + out_shortest_list[i]:
                    out_shortest_list[c] = d + out_shortest_list[i]
                    new_search_list.append(c)
        searching_list = new_search_list
    return out_shortest_list

x, y, z = [ int(v) for v in input().split() ]
s0, t0 = input().split()
s1, t1 = input().split()
t0, t1 = int(t0), int(t1)
connect_list = [ [] for i in range(8) ]
d_list = (x, y, z)
c_list = ("A", "B", "C")
for i in range(3):
    for j in range(3):
        if i != j:
            connect_list[i].append((j, 1))
for i in range(3, 6):
    for j in range(3, 6):
        if i != j:
            connect_list[i].append((j, 1))
for i in range(3):
    connect_list[i].append((i+3, d_list[i]-1))
    connect_list[i+3].append((i, d_list[i]-1))

i = c_list.index(s0)
connect_list[i].append((6, t0-1))
connect_list[i+3].append((6, d_list[i]-t0))
connect_list[6].append((i, t0-1))
connect_list[6].append((i+3, d_list[i]-t0))
i = c_list.index(s1)
connect_list[i].append((7, t1-1))
connect_list[i+3].append((7, d_list[i]-t1))
connect_list[7].append((i, t1-1))
connect_list[7].append((i+3, d_list[i]-t1))


distance_list = djkstra3(6,connect_list,8)
print(distance_list[7])