Scanf.scanf "%d %d %c" (fun n m op ->
    let b = Array.init m (fun _ -> Scanf.scanf " %d" (fun b -> b)) in
    for i = 1 to n do
        Scanf.scanf " %d" (fun a ->
            for j = 1 to m do
                let v = if op = '+' then a + b.(j - 1)
                                    else a * b.(j - 1)
                in
                Printf.printf "%d " v
            done
        );
        print_newline ()
    done
)