open System open System.Collections.Generic [] 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())) [] 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 open System.Text.RegularExpressions let main() = let s = read string let reg = Regex("…+") reg.Matches(s) |> Seq.cast |> Seq.map (fun m -> m.Length) |> fun x -> if Seq.isEmpty x then 0 else Seq.max x |> puts () main() writer.Close()