uses crt;
var a:array[1..20]of integer;
i,n,t,dem:integer;
begin
clrscr;
for i:=1 to 20 do
begin
repeat
write('A[',i,']='); readln(a[i]);
until a[i]>0;
end;
t:=0;
for i:=1 to 20 do
t:=t+a[i];
writeln('Tong cac so trong mang la: ',t);
dem:=0;
for i:=1 to 20 do
if a[i] mod 2=0 then inc(dem);
writeln('Trong mang co ',dem,' so chan');
readln;
end.