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 // ----------------------------------------------------------------------------------------------------- // ----------------------------------------------------------------------------------------------------- let main() = let S = readChars() let T = readChars() let tlen = T |> Array.length if tlen = 1 then for c in S do if c = T.[0] then printfn "-1" exit 0 let slen = S |> Array.length let mutable ans = 0 let mutable i = 0 while i < slen do let mutable ok = true for j in 0 .. tlen - 1 do if i + j < slen && S.[i + j] <> T.[j] then ok <- false if ok then ans <- ans + 1 let k = if ok then tlen else 1 i <- i + k puts ans () // ----------------------------------------------------------------------------------------------------- main() writer.Dispose()