let readString() = stdin.ReadLine()
let readStringArray() = stdin.ReadLine().Split(' ');
let readInt() = readString() |> int
let readIntArray() = readStringArray() |> Array.map (fun x -> int x)

let a, b, c = readIntArray() |> fun x -> (x.[0], x.[1], x.[2])

if a <= c && c <= b then "Yes" else "No"
|> printfn "%s"