source_code: import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.PrintStream;
  import java.io.PrintWriter;
  import java.util.*;
  
  
  public class Main {
  
      private static void solve() throws IOException {
          long n = nextLong();
          out.println(25);
      }
  
      public static void main(String[] args) throws Exception {
          File file = new File("System.in");
          InputStream input = System.in;
          PrintStream output = System.out;
          if (file.exists() && file.canRead()) {
              input = new FileInputStream(file);
              output = new PrintStream("System.out");
          }
          br = new BufferedReader(new InputStreamReader(input));
          out = new PrintWriter(output);
          solve();
          out.close();
      }
  
      private static BufferedReader br;
      private static StringTokenizer st;
      private static PrintWriter out;
  
      private static boolean hasNextToken() throws IOException {
          while (st == null || !st.hasMoreTokens()) {
              String line = br.readLine();
              if (line == null) {
                  return false;
              }
              st = new StringTokenizer(line);
          }
          return true;
      }
  
      private static String nextToken() throws IOException {
          return hasNextToken() ? st.nextToken() : null;
      }
  
      private static int nextInt() throws IOException {
          return Integer.parseInt(nextToken());
      }
  
      private static long nextLong() throws IOException {
          return Long.parseLong(nextToken());
      }
  
      private static double nextDouble() throws IOException {
          return Double.parseDouble(nextToken());
      }
  
  }
  
  
  
  