program ct;
uses crt;
var A:array[1..1000] of integer;
n,i:integer;
S:integer;
begin clrscr;
writeln('Nhap so phan tu n: '); readln(n);
for i:=1 to n do
begin
writeln('A[',i,']: '); readln(A[i]);
end;
S:=0;
for i:=1 to n do
if A[i] mod 2=0 then S:=S+A[i];
write('Tong cac phan tu so chan la: ',S);
readln;
end.
Học tốt!