source_code: 
  import java.util.Scanner;
  
  /**
   * Feb 18, 2016 | 4:00:49 PM
   * <pre>
   * <u>Description</u>
   *
   * </pre>
   *
   * @author Essiennta Emmanuel (colourfulemmanuel@gmail.com)
   */
  public class ProblemA{
      
      public static void main(String[] args){
          Scanner sc = new Scanner(System.in);
          sc.next();
          System.out.println(25);
          sc.close();
      }
  }
  