#include <stdio.h>

int main(void)
{
	int a;
	int x=10;
	int b=0;
	double c=0.0;
	int d;
	double v;
	int t;
	int t2;
	scanf("%d",&a);
	d=a/100.0*60;
	t=d/60;
	t2=d%60;
	v=a/100.0;
	printf("%d:%02d\n",x+t,t2);
	return 0;
}