Array wave print column wise doubt

#1

sir could u please point out where did i made mistake
code compilation was successful but failed all test cases while submitting

#2

Check o/p format, do this

if(i % 2 == 0)
		{
			for(j = 0; j < m; j++)
			{
				cout<<a[j][i]<<", ";
			}
		}
		else
		{
			for(j = m-1; j >= 0; j--)
			{
				cout<<a[j][i]<<", ";
			}
		}

Rest everything seems right.

#3

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