let solve a b =
    let a' = a - 23 |> max 0 |> min 3
    and b' = 25 - b |> max 0 |> min 3 in
    a' + b'

let () =
    let a, b =
        read_line ()
        |> fun l -> Scanf.sscanf l "%d %d" (fun a b -> (a, b)) in
    solve a b
    |> string_of_int
    |> print_endline