object Main{
  def time(s:Int):Unit = {
    var a = s / 3600
    var aa = s - a * 3600
    var b = aa / 60
    var c = aa - b * 60
    print(a)
    print(":")
    print(b)
    print(":")
    println(c)
  }
  def main(args:Array[String]){
    var sc = new java.util.Scanner(System.in)
    var s = sc.nextInt
    time(s)
  }
}