source_code: import java.io.BufferedReader;
  import java.io.InputStreamReader;
  
  public class A {
  	public static void main(String[] args) throws Exception {
  		BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
  		String l[] = bf.readLine().split(" ");
  		System.out.println(25);
  	}
  }