public class First {
    public static void main(String[] args) {
        int[] array = { 10, 15, 3, 7 };
        int k = 17;
        boolean addsUp = false;

        for (int i = 0; i < array.length; i++) {
            for (int j = 0; j < array.length; j++) {
                if (array[i] + array[j] == k) {
                    addsUp = true;
                }
            }
        }
        System.out.println(addsUp);
    }
}