Write a code to get the closet loop

Question

if two trucks A,B are at (x,y) coordinate.
the house is at (0,0).
which one is shortest.x coordinate should be of range -20....20and y coordinate is of range -20....20.
example-input-
3 -2 -5 -4
output-
A

Answer 1

https://code.sololearn.com/W7qCTNnC70By/?ref=app

Answer 2

what happenes if both are of cords(2, 2) (2, 2)

Answer 3

https://code.sololearn.com/cjs78qqZp1hQ/#cpp

Answer 4

it will give both is at same