truong hop cua ban minh gap roi .lam may cach tren chac chan la ko duoc dau.ban lay mail ra coi o ngay ben hong trau sim co 13 diem cham tron do 1 trong 13 diem cham do co 1 diem la tin hieu nguon ban lay nhip 1 chan cham mas 1 chan kia ra tin hieu vao may diem cham do diem nao len nguon la luom lua...