source_code: import java.io.*;
  import static java.lang.Math.*;
  
  import java.lang.reflect.Array;
  import java.util.*;
  import java.lang.*;
  
  public class Main {
      final static boolean debug = false;
      final static String fileName = "";
      final static boolean useFiles = false;
  
      public static void main(String[] args) throws FileNotFoundException {
          PrintWriter writer = new PrintWriter(System.out);
          new Task(new InputReader(System.in), writer).solve();
          writer.close();
      }
  }
  
  class InputReader {
      public BufferedReader reader;
      public StringTokenizer tokenizer;
  
      public InputReader(InputStream stream) {
          reader = new BufferedReader(new InputStreamReader(stream), 32768);
          tokenizer = null;
      }
  
      public String next() {
          while (tokenizer == null || !tokenizer.hasMoreTokens()) {
              try {
                  tokenizer = new StringTokenizer(reader.readLine());
              } catch (IOException e) {
                  throw new RuntimeException(e);
              }
          }
          return tokenizer.nextToken();
      }
  
      public double nextDouble() {
          return Double.parseDouble(next());
      }
  
      public int nextInt() {
          return Integer.parseInt(next());
      }
  
      public long nextLong() {
          return Long.parseLong(next());
      }
  
      public byte nextByte() {
          return Byte.parseByte(next());
      }
  }
  
  class Task {
      public void solve() {
          out.println(25);
      }
  
      private InputReader in;
      private PrintWriter out;
  
      Task(InputReader in, PrintWriter out) {
          this.in = in;
          this.out = out;
      }
  }
  