program hotrotinhoc;
var a: array[1..32000] of integer;
d,i,n: integer;
s: longint;
t: real;
begin
write['n=']; readln[n];
for i:=1 to n do
begin
write['a[',i,']=']; readln[a[i]];
end;
d:=0; s:=0;
for i:=1 to n do
if a[i] mod 2=1 then
begin
s:=s+a[i];
inc[d];
end;
t:=s/d;
write[t:1:2];
readln
end.
program TinhTBCTimSoNT;
var ten, lop: string; n, i, tong, dem: integer; A: array [1..11] of integer; trung_binh: real;
function LaSoNguyenTo[x: integer]: boolean; var i: integer; begin if x < 2 then LaSoNguyenTo := false else if x = 2 then LaSoNguyenTo := true else if x mod 2 = 0 then LaSoNguyenTo := false else begin i := 3; while [i