source_code: import java.io.*;
  import java.util.*;
  import java.text.*;
  import java.math.*;
  
  public class main {
      public static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      public static PrintWriter pw = new PrintWriter(System.out);
      public static String line;
      public static StringTokenizer st;
      public static ArrayList<ArrayList<Integer>> adjList;
  
      public static void main(String[] args) throws Exception{
          String s = br.readLine();
          pw.print(25);
          pw.print("\n");
          pw.close();
          br.close();
      }
  }
  