class Forty {
  public static void main(String[] args) {
    int n = 17, m = 18; 

    System.out.println( "37. " + n / 10 + n % 10 ); 
    System.out.println( "38. " + n % 2 + m % 2 ); 
    System.out.println( "39. " + (m + n) / 2 ); 
    System.out.println( "40. " + (m + n) / 2.0 ); 
    System.out.println( "41. " + (int) (0.5 * (m + n)) ); 

  } 
}