public class SimpleArray {
    public static int main() {
        int[] arr = new int[3];
        arr[0] = 10;
        arr[1] = 20;
        arr[2] = 30;
        System.out.println(arr[0]);
        System.out.println(arr[1]);
        System.out.println(arr[2]);
        int sum = arr[0] + arr[1] + arr[2];
        System.out.println(sum);
        return 0;
    }
}