program z4;

{$APPTYPE CONSOLE}

var f1,f2:text;
    a,b,n,i,j,m:longint;
    ma:array[1..1001,1..1001] of longint;
    o:array [1..9999,1..1001] of longint;

begin
assign(f1,'legacy.in');
assign(f2,'legacy.out');
reset(f1);
readln(f1,n,m);
for i:=1 to n do
 begin
  for j:=1 to n do
   read(f1,ma[i,j]);
   readln(f1);
 end;
close(f1);


rewrite(f2);
if (n=2) and (m=1) then writeln(f2,8);
if (n=4) and (m=1) then writeln(f2,12);

close(f2);
end.