mport java.util.Arrays;
public class zadacha {
	public static void sumArray(int[]arr, int sum) {

		for(int i = 0; i < arr.length; i ++) {

			sum += arr[i];
		}
		System.out.println(sum);
	}
	public static void main(String[] args) {
		int[] arr = {4,5,6,7,8,9,10};
		System.out.println(arr[0]);
		System.out.println(arr[6]);
		System.out.println();

		for(int i = 0; i < arr.length; i ++) {
			System.out.print(arr[i] + " ");
		}
		System.out.println();
		sumArray(arr,0);
		System.out.println();
		System.out.println(arr[arr.length - 1]);
	}
}