/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.text.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		int numdays = 15680;    
        Calendar cal = Calendar.getInstance();    
        cal.set(Calendar.DAY_OF_MONTH, 1);
        cal.set(Calendar.MONTH, Calendar.JANUARY);
        cal.set(Calendar.YEAR, 1960);
        cal.add(Calendar.DATE, numdays);
 
        String strdate = null;
 
        SimpleDateFormat sdf = new SimpleDateFormat("YYYY-MM-dd");
 
        if (cal != null) {
            strdate = sdf.format(cal.getTime());
        }
        System.out.println(strdate);
	}
}

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