uese crt;
var a: array[1..100] of integer;
i,n,s: integer;
begin
clrscr;
writeln('Nhap so phan tu day:'); readln(n);
for i:= 1to n do begin
writeln('Nhap so thu',i,':'); readln(a[i]);
end;
writeln('day vua nhap la:');
for i:=1 to n do
write(a[i]:4);
for i:=1 to n do
if a[i] mod 3=0 then s:=s+a[i];
Writeln('Tong cac so chia het cho 3 la:',s);
readln;
end.