Nested If Statement Execution

What are the values of x and y after the following code segment is executed?

int x = 10, y = 5;
if (x > 0)
{
    if (x < 20)
    {
        y += x;
        if (y > 15)
            x /= 2;
    }
    else
        y = x - y;
}
else
    x *= -1;