let () =
    let heights = Array.make 10 0 in
    for i = 1 to 10 do
        let n = read_int () in
        Array.set heights (i-1) n
    done;

    Array.sort compare heights;

    for i = 1 to 3 do
        let height = heights.(10-i) in
        Printf.printf "%d\n" height
    done;