Half of the test cases are not passing

#1

I have written the right code as per best of my knowldge. But half of the test cases are not being passed so please look after the code once.

#2

for input
3
1 2 3
3
1 2 3

Your output
0, 2, 4, 6, END
correct Output
2, 4, 6, END

you can add one check in main() before printing array

        if(output[0]){
            cout<<output[0]<<", ";
        }
        for (int i = 1; i < outsize; ++i)
        {
            cout << output[i] << "," << " ";
        }
        cout << "END";
#3

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