const nmax=100;
type vector=array[1..nmax] of integer;

var

 a:vector;
 n,i,max:integer;

begin

 read(n);

 for i:=1 to n do
  read(a[i]);

 for i:=1 to n do
  if(a[i] mod 2 = 0) then
   max:=a[i];

 for i:=1 to n do
  if(a[i] mod 2 = 0) and (a[i]>max) then
   max:=a[i];

 write(max);

end.