program ct;
uses crt;
var i,n,s:integer;
A:array[1..19] of integer;
begin
clrscr;
for i:=1 to 19 do
begin
write('nhap mang A[',i,']:=');readln(A[i]);
end;
s:=0;
for i:=1 to 19 do
if A[i] mod 2=0 then s:=s+A[i];
writeln('tong cua day so la:',s);
readln
end.