program mangvatong;
uses crt;
var A:array[1..10000] of integer;
n,i,tong:integer;
begin
clrscr;
write('Nhap so luong phan tu n: '); readln(n);
writeln('NHAP GIA TRI TUNG PHAN TU CUA MANG');
tong:=0;
for i:=1 to n do
begin
write('Nhap phan tu thu ',i,': ');
readln(A[i]);
if A[i] mod 3=0 then tong:=tong+A[i];
end;
writeln('Mang vua nhap la:');
for i:=1 to n do
write(A[i]:4);
writeln;
write('Tong cac phan tu cua mang chia het cho 3 la: ',tong);
readln
end.