1

5 5

1 2 3 4 5

6 5 4 3 2

2 3 4 5 6

5 4 3 2 1

0 0 0 0 0

i have made this case worked on one of the correct codes and it is giving -1.

but i am getting answer as

3 2 0 2 3

6 5 5 5 6

4 3 5 3 4

2 1 4 1 2

0 0 4 0 0

though i am getting wrong_answer as judgement but could you please tell me why so it is happening and can any body please tell where my solution is getting wrong.

link to solution https://www.codechef.com/viewsolution/33316592

my approach is i had first seen the value of m as even or odd.

if m is even,

“then i will see that all the elements in matrice occur even no. of times.”

if m is odd

“there should be (n*m -n) numbers all occuring even number of times and n numbers are used as middle element of column (n can be either odd or even).”

please tell if there is some problem in my approach

will u please give the link of that solution >>

which solution correct one you are asking

this one.

As u have used 0 in your last row. and in constraints Ai is greater than 1 .

when u change 0 to any other element. so it will give right answer.