Examples:

$N=5$

$N=10$

$\backslash$table$[[1,1,0,1,0],[2,6,2,0,2],[3,7,10,3,0],[4,8,11,13,4],[5,9,12,14,15]]$

$\backslash$table$[[1,1,0,1,0,1,0,1,0,1],[2,11,2,0,2,0,2,0,2,0],[3,12,20,3,0,3,0,3,0,3],[4,13,21,28,4,0,4,0,4,0],[5,14,22,29,35,5,0,5,0,5],[6,15,23,30,36,41,6,0,6,0],[7,16,24,31,37,42,46,7,0,7],[8,17,25,32,38,43,47,50,8,0],[9,18,26,33,39,44,48,51,53,9],[10,19,27,34,40,45,49,52,54,55]]$

Note that $n$ is defined as input to the function. Do not overwrite values in this variable in your code. Be sure to assign a value to the function output variable $($s$).$

HARDCODING IS NOT ALLOWED!!! IT MEANS, YOU CANNOT DIRECTLY PRINT THE RESULT WITHOUT PERFORMING ANY OPERATIONS. OTHERWISE, YOU CANNOT PASS THE HIDDEN TESTS!!!

DO NOT CHANGE ANYTHING IN THE TEMPLATE ASIDE FROM ADDING YOUR OWN CODE IN THE SPECIFIED