You should implement the Task.calcilate() method which takes the next arguments: int[] values and int[] indexes.
The method should summarize all values from the values array which indexes are in the indexes array and return the
result.
Pay attention: The indexes array can contain indexes not existing in hte values array. They should be ignored.
For example, the method takes the next values: int[] {10, 20, 30} and int[] {0, 1, 1, 5}. So the result will be 50
because of values[0] + values[1] + values[1] and the values[5] element doesn't exist, so it's ignored.