#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
int main(void)
{
    double distance=0,speed=100;
    int hour=10,min=0;
    scanf("%lf",&distance);
    double plus = distance / 100;
    min = (int)(60 * plus+0.9);
    while (min > 59)
    {
        min = min - 60;
        hour++;
    }
    printf("%02d:%02d",hour,min);
}