import Control.Applicative

main :: IO ()
main = do
   xs <- words <$> getContents
   putStrLn $ show $ solve xs

solve :: [String] -> Integer
solve [x, y, z, startRosen, start, endRosen, end] = f (read x, read y, read z, startRosen, read start, endRosen, read end)
    where
        f :: (Integer, Integer, Integer, String, Integer, String, Integer) -> Integer
        f (a, b, c, s1, st, s2, ed)
            | s1 == s2  = g (s1, a, b, c, st, ed)
            | otherwise = h (s1, s2, a, b, c, st, ed)

g :: (String, Integer, Integer, Integer, Integer, Integer) -> Integer
g (s, a, b, c, start, end) = minimum xs
    where
        xs = case s of
            "A" -> [abs (end - start), if start < end then (start - 1) + 1 + (b - 1) + 1 + (a - end) else (a - start) + 1 + (b - 1) + (end - 1), if start < end then (start - 1) + 1 + (c - 1) + 1 + (a - end) else (a - start) + 1 + (c - 1) + (end - 1)]
            "B" -> [abs (end - start), if start < end then (start - 1) + 1 + (a - 1) + 1 + (b - end) else (b - start) + 1 + (a - 1) + (end - 1), if start < end then (start - 1) + 1 + (c - 1) + 1 + (b - end) else (b - start) + 1 + (c - 1) + (end - 1)]
            "C" -> [abs (end - start), if start < end then (start - 1) + 1 + (a - 1) + 1 + (c - end) else (c - start) + 1 + (b - 1) + (end - 1), if start < end then (start - 1) + 1 + (b - 1) + 1 + (c - end) else (c - start) + 1 + (a - 1) + (end - 1)]
h :: (String, String, Integer, Integer, Integer, Integer, Integer) -> Integer
h (s1, s2, a, b, c, start, end) = minimum xs
    where
        xs = case (s1, s2) of
            ("A", "B") -> [(a - start) + 1 + (c - 1) + 1 + (end - 1), (a - start) + 1 + (b - end), (start - 1) + 1 + (end - 1), (start - 1) + 1 + (c - 1) + 1 + (b - end)]
            ("A", "C") -> [(a - start) + 1 + (b - 1) + 1 + (end - 1), (a - start) + 1 + (c - end), (start - 1) + 1 + (end - 1), (start - 1) + 1 + (b - 1) + 1 + (c - end)]
            ("B", "C") -> [(b - start) + 1 + (a - 1) + 1 + (end - 1), (b - start) + 1 + (c - end), (start - 1) + 1 + (end - 1), (start - 1) + 1 + (a - 1) + 1 + (c - end)]
            ("B", "A") -> [(b - start) + 1 + (c - 1) + 1 + (end - 1), (b - start) + 1 + (a - end), (start - 1) + 1 + (end - 1), (start - 1) + 1 + (c - 1) + 1 + (a - end)]
            ("C", "A") -> [(c - start) + 1 + (b - 1) + 1 + (end - 1), (c - start) + 1 + (a - end), (start - 1) + 1 + (end - 1), (start - 1) + 1 + (b - 1) + 1 + (a - end)]
            ("C", "B") -> [(c - start) + 1 + (a - 1) + 1 + (end - 1), (c - start) + 1 + (b - end), (start - 1) + 1 + (end - 1), (start - 1) + 1 + (a - 1) + 1 + (b - end)]