#include<stdio.h>
#include<math.h>

int main()
{
  int numOfDays = 0;
  printf("Enter the number of days : ");
  scanf("%d",&numOfDays);
  
  int month = numOfDays/28;
  int remDays = numOfDays % 28;
  int week = remDays / 7;
  int days = remDays % 7;
  
  printf("Number of days in desired format: %d:%d:%d\n",month,week,days);
  
  return 0;
}