source_code: import java.io.*;
  import java.util.*;
  
  public class A {
      public static void main(String[] args) throws Exception {
  	// TODO Auto-generated method stub
  	BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
  	PrintWriter out = new PrintWriter(System.out);
  	String s = bf.readLine();
  	out.println(25);
  	
  	out.flush();
  	out.close();
  
      }
  }
  