source_code: 
  import java.util.Scanner;
  
  /*
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   * and open the template in the editor.
   */
  
  /**
   *
   * @author Madi
   */
  public class A630 {
      public static void main(String[] args) {
          Scanner sc = new Scanner(System.in);
          
          String s = sc.nextLine();
          System.out.println("25");
      }
  }
  