import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;

public class main {
    public static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    public static PrintWriter pw = new PrintWriter(System.out);
    public static String line;
    public static StringTokenizer st;
    public static ArrayList<ArrayList<Integer>> adjList;

    public static void main(String[] args) throws Exception{
        String s = br.readLine();
        pw.print(25);
        pw.print("\n");
        pw.close();
        br.close();
    }
}
