import java.io.*;
	public class TestYear{
  	public static void main(String[] args) throws IOException {
    	InputStreamReader in=new InputStreamReader(System.in); 
 	BufferedReader bin=new BufferedReader(in);
	int year;
	System.out.println("һݣس");
	year=Integer.parseInt(bin.readLine());
	if(year%4==0 &&(year%100!=0)||(year%400==0))
  		System.out.println(year+"꣡");
	else
		System.out.println(year+"꣡");
	}
}
