source_code: /*
   * Code Author: Sanket Udgirkar.
   * DA-IICT
   */
  import java.util.*;
  import java.io.*;
  public class Tester
  {
  	public static long mod=(long)1e9+7;
  	
  	public static void main(String[] args) 
  	{
  		InputReader s=new InputReader(System.in);
          OutputStream outputStream = System.out;
          //PrintWriter out=new PrintWriter(outputStream);
          
         String str=s.nextLine();
         System.out.println("25");
          
          
          //out.close();
  	}   
  	
  	static long gcd(long a,long b)
  	{
  		if(b==0)
  			return a;
  		a%=b;
  		return gcd(b,a);
  	}
  	
  	static long exp(long a, long b)
  	{
  		if(b==0)
  			return 1;
  		if(b==1)
  			return a;
  		if(b==2)
  			return a*a;
  		
  		if(b%2==0)
  			return exp(exp(a,b/2),2);
  		else
  			return a*exp(exp(a,(b-1)/2),2);
  	}
  	
  	static class Pair implements Comparable<Pair>
  	{
  		long x,f;
  		Pair(long ii, long cc)
  		{
  			x=ii;
  			f=cc;
  		}
  		
  		public int compareTo(Pair o) 
  		{
  			return Long.compare(this.x, o.x);
  		}
  		
  	}
  
      public static class InputReader 
      {
      	public BufferedReader reader;
      	public StringTokenizer tokenizer;
       
      	public InputReader(InputStream inputstream) 
      	{
      	      reader = new BufferedReader(new InputStreamReader(inputstream));
      	      tokenizer = null;
      	}
      	    
      	public String nextLine()
      	{
      	    String fullLine=null;
      	    while (tokenizer == null || !tokenizer.hasMoreTokens()) 
      	    {
      	        try {
      	              fullLine=reader.readLine();
      	            } 
      	        catch (IOException e) 
      	        {
      	              throw new RuntimeException(e);
      	        }
      	        return fullLine;
      	     }
      	     return fullLine;
      	}
      		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 long nextLong() {
      		      return Long.parseLong(next());
      		    }
      	    public int nextInt() {
      	      return Integer.parseInt(next());
      	    }
      	  }
   
  }