import java.util.Scanner;
class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int secTime = sc.nextInt();
        if (secTime == 0) {
            System.out.println("0:0:0");
            return;
        }
        int ansSec = secTime % 60;
        int min = secTime / 60;
        if (min == 0) {
            System.out.println("0:0:" + ansSec);
            return;
        }
        int ansMin = min % 60;
        int ansHour = secTime / (60 * 60);
        System.out.println(ansHour + ":" + ansMin + ":" + ansSec);
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz