source_code: import java.io.*;
  import java.util.*;
  import java.math.*;
  import static java.lang.Math.*;
  import static java.lang.Integer.parseInt;
  import static java.lang.Long.parseLong;
  import static java.lang.Double.parseDouble;
  import static java.lang.String.*;
      
  public class Main {
      
      public static void main(String[] args) throws IOException {
          BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
                                              //(new FileReader("input.in"));
          StringBuilder out = new StringBuilder();
          StringTokenizer tk;
          
          
          long n = parseLong(in.readLine());
          
          System.out.println("25");
      }
      
  }
   