source_code: import java.util.Scanner;
  
  /**
   * Created by Gantushig on 2/18/2016.
   */
  
  public class A {
  
      public static void main(String[] args) {
          Scanner input = new Scanner(System.in);
          long n = input.nextLong();
          System.out.println("25");
      }
  
  }
  