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();
	}

}