x, y, z = map(int, input().split())
s_line, s_num = input().split()
s_num = int(s_num)
t_line, t_num = input().split()
t_num = int(t_num)

if s_line == t_line:
    print(abs(s_num - t_num))
else:
    # Determine R_end and Q_end based on the lines
    r_end = x if s_line == 'A' else y if s_line == 'B' else z
    q_end = x if t_line == 'A' else y if t_line == 'B' else z

    cost1 = (s_num - 1) + 1 + (t_num - 1)
    cost2 = (r_end - s_num) + 1 + (q_end - t_num)
    cost3 = (s_num - 1) + 1 + 1 + (q_end - t_num)
    cost4 = (r_end - s_num) + 1 + 1 + (t_num - 1)

    min_cost = min(cost1, cost2, cost3, cost4)
    print(min_cost)