#include<bits/stdc++.h>
using namespace std;
int main(){
	int i=6,j[i],n,k;
	cin>>n;
	for(i=0;i<=5;i++)
		j[i]=0;
	i=6;
	while(n!=0){
		if(n%60<10){
			j[i-1]=n;
			j[i-2]=0;	
		}
		else{
			j[i-1]=n%10;
			j[i-2]=n/10;
		}
		i-=2;
		n/=60;
	}
	for(i=0;i<=5;i++){
		cout<<j[i];
		if((i+1)%2==0&&i!=5)
		cout<<":";
	}
	return 0;
}
/**************************************************************
	Problem: 1081
	User: houshanglin
	Language: C++
	Result: Wrong Answer
****************************************************************/