source_code: import java.io.*;
  import java.util.*;
  
  public class Main {
  	
  	void solve(Scanner in, PrintWriter out) {
  		long a = in.nextLong();
  		out.println(25);
  	}
  	void run() {
  		Locale.setDefault(Locale.US);
  		try (
  				Scanner in = new Scanner(System.in);
  				PrintWriter out = new PrintWriter(System.out);
  		) {
  			solve(in, out);
  		  }	
  	}
  	
  	public static void main(String args[]) {
  		new Main().run();
  	}
  
  }