How to display the last element of a multidimensional array?

Question

Twig

There is an array:

A: x=vvv
   y=aaa
B: x=dsaa
   y=asd
C: x=abc
   y=def

(There are 3 elements in the array, each element has string fields x and y)
How to display information about the LAST ELEMENT of this array in the form: xy?
In the example above, you need to get: abc-def

There can be many elements in the array - this is not a specific number

Answer 1

Problem solved:
{{ mass|last.x }}-{{ mass|last.y }}
Where mass is the desired array