Hi ba'c Vie^.t, Tha(`ng cha tro^ng lab ddang doa. dduo^?i, em no'i qua tho^i nhe', tua^`n sau no'i tie^'p. Ddo HLNTC ma` chi? ba(`ng byte thi` e ra(`ng qu'a phoe^'n die^.n. Ba'c nho+' ca'i co^ng thu+#c mo^ pho?ng E=mc^2 cu?a cu. NDNgo.c kho^ng, em cu~ng knghi~ pha?i the^m va`i thu+' nguye^n kha'c, kho^ng chi? du`ng byte dduo+.c La^m