Scanf.scanf "%d %d %d" (fun n m k ->
    let rec loop_a a =
        let rec loop_b b =
            if b > n then loop_a (a + 1) else
                if a * n + b * m - 2 * a * b = k then true else loop_b (b + 1)
        in
        if a > m then false else
            loop_b 0
    in
    print_endline @@ if loop_a 0 then "Yes" else "No"
)