source_code: 
  import java.io.PrintWriter;
  import java.util.Locale;
  import java.util.Scanner;
  
  public class Main {
  	
  	public static void main(String args[]) {
  		new Main().run();
  	}
  	
  	void run(){
  		Locale.setDefault(Locale.US);
  		try(Scanner in=new Scanner(System.in);
  			PrintWriter out=new PrintWriter(System.out)){
  			solve(in, out);
  		}
  		catch (Exception e) {
  			e.printStackTrace();
  		}
  	}
  
  	private void solve(Scanner in, PrintWriter out) {
  		String a=in.nextLine();
  		out.println("25");
  	}
  	
  }
  