Can somebody give me test cases to test them on my program?

Thanks in advance.

I can't even pass test #1.

For this input:
7
2 3 0
3 1 0
1 2 4 5 0
3 0
3 0
7 0
6 0

my prgram gives this output:
4
2 4 5 7

your answer is accepted ! My AC program output, too