class Date {

	private int day, month, year;

	Date (int day0, int month0, int year0) {
		day = day0; month = month0; year = year0;
	}

	Date() {}

	void get() {
		day = Console.readInt();
		month = Console.readInt();
		year = Console.readInt();
	}

	void put() {
		System.out.printf("%02d/%02d/%02d\n", day, month, year);
	}

	void compare(Date d){//(i)
		if(year<d.year){
			return true;
		}
		else if(year==d.year&&month<d.month){
			return true;
		}
		elseif(year==d.year&&month<d.month&&day<d.day){
			return true;
		}
		else return false;
	}

}

class SortDates {

   private static void sort(Date[] ds, int n) {
	    // Sort array ds[0..n-1] using insertion sort
	    int j = 0; // ds[j..] to be sorted
	    while (j<n-1) {
	        // find minimum in ws[j..]
	        int min = j;  int i = j+1;
	        // ds[min] is minimum in ds[j..i-1]
	        while (i<n) {
	            if (ds[i].compare(ds[min]))) {	//(ii)
	                min = i;
	            }
	            i++;
	        }
	        // ds[min] is minimum in ds[j..]
	        // swap ds[j] and ds[min]
           Date temp = ds[j]; ds[j] = ds[min]; ds[min] = temp;
           // advance
	        j++;
	    }
    }

    public static void main(String[] args) {
        Date[] days = new Date[1000]; //
        int n = 0; // days[0..n-1] significant
        while (!Console.endOfFile()) {
            days[n]=new Date();
			days[n].get();
            n++;
        }
        sort(days,n); // sort entries
        // print dates in ascending order
        for (int i=0; i<n; i++)
            days[i].put();
    }
}