public class LA6 {
  public static int sum (int[] v) {
    int sum = 0;
    for(int i=0; i<v.length; i++) {
      sum += v[i];
    }
    return sum;
  }

  public static int[] reverse (int[] v) {
    int[] answer = new int[v.length];
    for(int i=0; i<v.length; i++) {
      answer[i] = v[v.length-1-i];
    }
    return answer;
  }

  public static void display (int[] v) {
    for(int i=0; i<v.length; i++) {
      System.out.print(v[i]+" ");
    }
    System.out.println();
  }

  public static void main(String args[]) {
    // This is just a shell
  }
}