class Seventeen {
  public static void main(String[] args) {

    int count = 0; 
    for (int i = 1; i <= 10; i++) { count += 1; } 
    System.out.println( "17. " + count + " iterations. "); 

    count = 0; 
    for (int i = 0; i <= 10; i++) { count += 1; } 
    System.out.println( "18. " + count + " iterations. "); 

    count = 0; 
    for (int i = 10; i > 0; i--) { count += 1; } 
    System.out.println( "19. " + count + " iterations. "); 

    count = 0; 
    for (int i = -10; i <= 10; i++) { count += 1; } 
    System.out.println( "20. " + count + " iterations. "); 

    count = 0; 
    for (int i = -10; i <= 10; i = i + 2) { count += 1; } 
    System.out.println( "21. " + count + " iterations. "); 

  } 
}