import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		for(int h=0;h < 241;h++){
			if(n >= 3600){
				n = n-3600;
			}else{
				System.out.print(h+":");
				break;
			}
		}
		for(int m=0;m < 60;m++){
			if(n >=60){
				n = n-60;
			}else{
				System.out.println(m+":"+n);
				break;
			}
		}
	}
}
/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