source_code: import java.io.BufferedReader;
  import java.io.InputStreamReader;
  import java.io.PrintWriter;
  import java.math.BigDecimal;
  import java.math.BigInteger;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.StringTokenizer;
  import java.util.TreeMap;
  import java.util.TreeSet;
  
  public class Main 
  {
  	static ArrayList<Integer> Unique(ArrayList<Integer> x)
  	{
  		TreeSet<Integer> tmp=new TreeSet<Integer>();
  		tmp.addAll(x);
  		x.clear();
  		x.addAll(tmp);
  		return x;
  	}
  	public static void main(String[] args) 
  	{
  		InputReader in = new InputReader();
  //		Scanner in=new Scanner(System.in);
  		PrintWriter out = new PrintWriter(System.out);
  		while(in.hasNext())
  		{
  			long n=in.nextLong();
  			out.println("25");
  		}
  		out.close();
  	}
  }
  
  class node
  {
  	ArrayList<Integer> v=new ArrayList<Integer>();
  	node(){}
  	void push(Integer a)
  	{
  		v.add(a);
  	}
  }
  
  class InputReader 
  {
  	BufferedReader buf;
  	StringTokenizer tok;
  	InputReader() 
  	{
  		buf = new BufferedReader(new InputStreamReader(System.in));
  	}
  
  	boolean hasNext() 
  	{
  		while (tok == null || !tok.hasMoreElements()) 
  		{
  			try 
  			{
  				tok = new StringTokenizer(buf.readLine());
  			} 
  			catch (Exception e) 
  			{
  				return false;
  			}
  		}
  		return true;
  	}
  
  	String next() 
  	{
  		if (hasNext())
  			return tok.nextToken();
  		return null;
  	}
  
  	int nextInt() 
  	{
  		return Integer.parseInt(next());
  	}
  
  	long nextLong() 
  	{
  		return Long.parseLong(next());
  	}
  
  	double nextDouble() 
  	{
  		return Double.parseDouble(next());
  	}
  
  	BigInteger nextBigInteger() 
  	{
  		return new BigInteger(next());
  	}
  
  	BigDecimal nextBigDecimal() 
  	{
  		return new BigDecimal(next());
  	}
  }