&>:02pv Read a value t from the user, store it at (0,2)
divide t by 2, if t > 0 store (0,2)+t at (0,2) repeat
>2/:0`!#v_:02g+02p
if t <= 0 print (0,2) as integer, end program
>02g.@
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Befunge-93
Edit:
Here is a version with comments