program mang;
uses crt;
var A;array [1..500] of integer;
n,i,T: integer;
Begin
clrscr;
write('Nhap so phan tu: '); realdn(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(A[i]);
T:=T+A[i];
end;
write('a) Day vua nhap: ');
for i:=1 to n do write(A[i],' ');
writeln;
writeln('b) Tong cac phan tu = ',T);
write(' Trung binh cong cac phan tu = ',T/n:2:1);
readln
End.