var
  a : array [1..100] of longint;
  m,i,n,k,sum,min,nom,max : longint;
begin
  readln(n);
  for i:=1 to n do
    readln(a[i]);
  i:=1;
  if a[i]:=0 then
    a[i]:=5;
  writeln();
end.