open System
open System.Collections.Generic

[<AutoOpen>]
module FastIO =
    let reader = new IO.StreamReader(new IO.BufferedStream(Console.OpenStandardInput()))
    let inline read f = reader.ReadLine() |> f
    let inline reada f = reader.ReadLine().Split() |> Array.map f
    let inline readChars() = read string |> Seq.toArray
    let inline readInts() = readChars() |> Array.map (fun x -> Convert.ToInt32(x.ToString()))

    let writer = new IO.StreamWriter(new IO.BufferedStream(Console.OpenStandardOutput()))
    let inline write (s: string) = writer.Write s
    let inline writeln (s: string) = writer.WriteLine s
    let inline puts (s: ^a) = string s |> writeln

    let inline ioDispose() =
        reader.Dispose()
        writer.Dispose()

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

// -----------------------------------------------------------------------------------------------------
let main() =
    let n = read int
    let st = SortedDictionary<string, int>(StringComparer.OrdinalIgnoreCase)
    for i in 0 .. n - 1 do
        let s = read string
        if st.ContainsKey(s) then st.[s] <- st.[s] + 1 else st.Add(s, 1)
    let cnt = Seq.maxBy (fun (kv: KeyValuePair<string, int>) -> kv.Value) st
    for kv in st do
        if cnt.Value = kv.Value then puts kv.Key
    ()
// -----------------------------------------------------------------------------------------------------
main()
ioDispose()
