import java.util.Arrays;

public class OddEven {
    public static boolean odd(int input) {
        return input % 2 == 0;
    }

    public static int oddSum(int[] arr) {
        int oddSum = 0;
        for (int num : arr) {
            if (odd(num))
                oddSum += num;
        }
        return oddSum;
    }

    public static int evenSum(int[] arr) {
        int total = Arrays.stream(arr).sum();
        return total - oddSum(arr);
    }
}