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();

    }
}
