Can't understand the sample input/output!

#1

Please explain me the sample input and its o/p ??

#2

@namandubey20 It is just simple addition.
Consider Sample Input:
INPUT
4
1 0 2 9
5
3 4 5 6 7
OUTPUT
3, 5, 5, 9, 6, END

Consider this:
__1 0 2 9
+34 5 6 7
_________on adding
3 5 5 9 6