Scanf.scanf "%d %d %d"(fun a1 a2 a3 ->
    let iskado b1 b2 b3 =
        (b2 < b1 && b2 < b3 && b1 <> b3) ||
        (b2 > b1 && b2 > b3 && b1 <> b3)
    in
    let rec count i acc =
        if i = 0 then acc else
            count (i - 1) (if iskado (a1 mod i) (a2 mod i) (a3 mod i) then acc + 1 else acc)
    in
    if iskado a1 a2 a3 then print_endline "INF" else
           Printf.printf "%d\n" @@ count (max a1 (max a2 a3)) 0
)