var a:array[1..1000] of integer;
i,n,d:integer;
begin
write('n = ');readln(n);
for i:=1 to n do
begin
write('nhap so thu ',i,' = ');readln(a[i]);
if a[i] mod 2 <> 0 then d:=d+1;
end;
write('Cac so o vi tri le la ');
for i:=1 to n do
if i mod 2 <> 0 then write(a[i]:8);
writeln;
write('co ',d,' so le');
readln
end.