vi lop minh thi xong la cac ban dc nghi luon nen N chua co thoi gian thich hop de thong bao ve tien quy cung nhu thu, chi trong hoc ki nay. N thay post thang len mang thi khong hay lam va se kho giai thich thac mac cua cac ban, neu cac ban dong yh thi` dau nam 2, hop lop lai N se trinh bay ro~. do la yh kien cua N, cac ban nao thay post len dien dan la hop ly hay co yh kien khac thi dong gop cho N nhe.
he` vui na!!