open System
open System.Collections.Generic

[<AutoOpen>]
module Cin =
    let read f = stdin.ReadLine() |> f
    let reada f = stdin.ReadLine().Split() |> Array.map f
    let readChars() = read string |> Seq.toArray
    let readInts() = readChars() |> Array.map (fun x -> Convert.ToInt32(x.ToString()))

[<AutoOpen>]
module Cout =
    let writer = new IO.StreamWriter(new IO.BufferedStream(Console.OpenStandardOutput()))
    let print (s: string) = writer.Write s
    let println (s: string) = writer.WriteLine s
    let inline puts (s: ^a) = string s |> println

// -----------------------------------------------------------------------------------------------------

// -----------------------------------------------------------------------------------------------------

let main() =
    let N = read int
    let A = reada int
    let mutable ok = false
    let memo = SortedDictionary<int, int>()
    for a in A do
        if memo.ContainsKey(a) then memo.[a] <- memo.[a] + 1 else memo.Add(a, 1)

    if memo.Count = 3 && N%3=0 then 
        memo
        |> Seq.forall (fun x -> x.Value = N/3)
        |> fun b -> if b then ok <- true
    else if memo.Count = 2 && N%3=0 then 
        let a = Array.ofSeq memo
        if a.[0].Key = 0 && a.[0].Value = N/3 && a.[1].Value = N/3*2 then ok <- true
    else if memo.Count = 1 && memo.ContainsKey(0) then ok <- true

    if ok then "Yes" else "No"
    |> puts
    ()

// -----------------------------------------------------------------------------------------------------
main()
writer.Dispose()
