source_code: import java.io.*;
  public class again_25 {
  	public static void main(String ar[])throws IOException
  	{
  		long n;
  		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
  		n=Long.parseLong(br.readLine());
  		System.out.println("25");
  	}
  }
  