Fixed-size array

Given below is an array of integers:

a = [3, 5, 2, 1]

Assume we perform the following operations with the array:

x = 10
a[0] -= x
a[1] += x
x -= a[2]
a[2] = x
a[3] -= x

What is the state of the array after that? Print the elements of the resulting array separated by spaces in the field below. For example, your output may look like this:

5 4 1 3