source_code: /*
   * The MIT License
   *
   * Copyright 2016 Mouad NACIRI <mouadnaciri1@gmail.com>.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  import java.io.BufferedReader;
  import java.io.BufferedWriter;
  import java.io.InputStreamReader;
  import java.io.OutputStreamWriter;
  import java.io.IOException;
  import java.util.StringTokenizer;
  
  /**
   *
   * @author NACIRI Mouad <mouadnaciri1@gmail.com>
   * @version 1.5.1
   */
  
  public class MainA {
      /* VIP, DON'T TOUCH!! */
      static StringTokenizer ST;
      static BufferedReader IN;
      static BufferedWriter OUT;
      static {
          IN = new BufferedReader(new InputStreamReader(System.in));
          OUT = new BufferedWriter(new OutputStreamWriter(System.out));
      }
      
      public static void main(String[] args) throws IOException {
          
          pl("25");
          cAll();
      }
      
      //IO stuff...
      static void ll() throws IOException { ST = new StringTokenizer(nlnt()); }
      static void ll(String del) throws IOException { ST = new StringTokenizer(nlnt(), del); }
      static void ll(String s, String del) throws IOException { ST = new StringTokenizer(s, del); }
      static void ll(String s, char c) throws IOException { ST = new StringTokenizer(s); }
      
      static int tlen() { return ST.countTokens(); }
      static boolean hn() { return ST.hasMoreTokens(); }
      static String n() throws IOException { return ST.nextToken(); }
      static String nln() throws IOException {
          String l;
          while((l = IN.readLine()) != null && l.trim().length() == 0) {}
          return l;
      }
      static String nlnt() throws IOException {
          String l;
          while((l = IN.readLine()) != null && (l = l.trim()).length() == 0) {}
          return l;
      }
      static boolean nbl() throws IOException { return Boolean.parseBoolean(ST.nextToken()); }
      static byte nb() throws IOException { return Byte.parseByte(ST.nextToken()); }
      static byte nb(int radix) throws IOException { return Byte.parseByte(ST.nextToken(), radix); }
      static double nd() throws IOException { return Double.parseDouble(ST.nextToken()); }
      static float nf() throws IOException { return Float.parseFloat(ST.nextToken()); }
      static int ni() throws IOException { return Integer.parseInt(ST.nextToken()); }
      static int ni(int radix) throws IOException { return Integer.parseInt(ST.nextToken(), radix); }
      static long nl() throws IOException { return Long.parseLong(ST.nextToken()); }
      static long nl(int radix) throws IOException { return Long.parseLong(ST.nextToken(), radix); }
      static short ns() throws IOException { return Short.parseShort(ST.nextToken()); }
      static short ns(int radix) throws IOException { return Short.parseShort(ST.nextToken(), radix); }
      
      static void p(String s) throws IOException { OUT.write(s); }
      static void p(char c) throws IOException { OUT.write(c); }
      static void p(char s[]) throws IOException { OUT.write(s); }
      static void pl(String s) throws IOException { OUT.write(s); OUT.newLine(); }
      static void pl(char c) throws IOException { OUT.write(c); OUT.newLine(); }
      static void pl(char s[]) throws IOException { OUT.write(s); OUT.newLine(); }
      static void pl() throws IOException { OUT.newLine(); }
      static void cAll() throws IOException { IN.close(); OUT.close(); }
      
  }
  