#include<iostream>#include<string>#include<cstring>#include<set>#include<algorithm>using namespace std;int main(){    long int data;	cin>>data;	int i;	int array[3];	for(i=0;i<3;i++)	{		array[2-i]=data%60;		data/=60;	}	cout<<array[0]<<":"<<array[1]<<":"<<array[2]<<endl;	return 0;}