source_code: import java.io.*;
  import java.util.*;
  import java.text.*;
  import java.math.*;
  import java.util.regex.*;
  
  import java.util.Set;
  import java.util.Map.Entry;
  
  import java.util.HashMap;
  import java.util.Iterator;
  
  public class test {
      public static void main(String[] args) {
          Scanner input = new Scanner(System.in);
          String num = input.nextLine();
  
          System.out.println("25");
      }
  }