a,
Var a: array (1...250)of integer;
n,i,t: integer;
begin
write (' nhap so luong phan tu:'); readln (n);
t:=0;
for i:=1 to n do
begin
write ('A(',i,')=');
readln (A(i));
if (A(i) mod 2=0) then t:=t+ A(i);
end;
write('tong cac phan tu chan trong day:',t);
readln;
end.