source_code: /* package whatever; // don't place package name! */
  
  import java.util.*;
  ;
  
  /* Name of the class has to be "Main" only if the class is public. */
  public class Main
  {
  	public static void main (String[] args) throws java.lang.Exception
  	{
  		// your code goes here
  		Scanner s = new Scanner(System.in);
  		long n = s.nextLong();
  		System.out.println(25);
  	}
  }