program Mang;
uses crt;
var A:array [1..500] of integer;
n,i: integer;
TB: real;
Begin
clrscr;
write('Nhap so phan tu: '); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(A[i]);
TB:=TB+A[i];
end;
TB:=TB/n;
writelln('Trung binh cong cua mang = ',TB:2:1);
write('Cac gia tri < gia tri trung binh cong: ');
for i:=1 to n do
if A[i]<TB then write(A[i],' ');
readln
End.