#include<iostream>
using namespace std;
int main(){

	int a;
	cin>>a;
	int ansa=10;
	int ansb=0;
	
	ansa+=a/100;
	ansb+=(a%100)/10;
	ansb*=6;
	if(ansb/10==0)
		cout<<ansa<<":0"<<ansb<<endl;
	else
		cout<<ansa<<":"<<ansb<<endl;
		
	return 0;
}