source_code: import java.io.InputStreamReader;
  import java.io.IOException;
  import java.io.BufferedReader;
  import java.io.OutputStream;
  import java.io.PrintWriter;
  import java.util.StringTokenizer;
  import java.io.InputStream;
  import java.math.BigInteger;
  import java.util.Arrays;
  /**
   * Built using CHelper plug-in
   * Actual solution is at the top
   * @author Erasyl Abenov
   * 
   * 
   */
  public class Main {
      public static void main(String[] args) throws IOException {
          InputStream inputStream = System.in;
          OutputStream outputStream = System.out;
          InputReader in = new InputReader(inputStream);
              try (PrintWriter out = new PrintWriter(outputStream)) {
                  TaskB solver = new TaskB();
                  solver.solve(1, in, out);
              }
      }
  }
  class TaskB {
      public void solve(int testNumber, InputReader in, PrintWriter out) throws IOException{
          String n = in.next();
          out.println(25);
      }
  }
     
         
  class InputReader {
      private final BufferedReader reader;
      private StringTokenizer tokenizer;
      public InputReader(InputStream stream) {
          reader = new BufferedReader(new InputStreamReader(stream));
          tokenizer = null;
      }
          
      public String nextLine() {
          try {
              return reader.readLine();
          } catch (IOException e) {
              throw new RuntimeException(e);
          }
      }
          
      public String next() {
          while (tokenizer == null || !tokenizer.hasMoreTokens()) {
              tokenizer = new StringTokenizer(nextLine());
          }
          return tokenizer.nextToken();
      }
          
      public int nextInt() {
          return Integer.parseInt(next());
      }
      public BigInteger nextBigInteger(){
          return new BigInteger(next());
      }
      public long nextLong() {
          return Long.parseLong(next());
      }
      public double nextDouble() {
          return Double.parseDouble(next());
      }
  }