Program HOC24;
var d,i,n: integer;
t: real;
begin
write('Nhap n: '); readln(n);
for i:=1 to n do
begin
write('Nhap so thu ',i,': '); readln(a[i]);
end;
d:=0; t:=0;
for i:=1 to n do
if a[i] mod 2=0 then
begin
d:=d+1;
t:=t+a[i];
end;
t:=t/d;
writeln('Co ',d,' so chan trong mang');
writeln('Trung binh cong cac phan tu chan la: ',t:2:5);
write('Cac phan tu trong day theo chieu doc: ');
for i:=1 to n do writeln(a[i]);
readln
end.