PP dem nhanh so dong phan
! !"#!"#$ !" #$%&' !"#$%& '()*+,-.)*.//012#&32.,$4)#5 0 36 7 %6 8 %6 9 :()*#;+<33=7%8%9$)*#;+<3 3=>?4@,A= 0 %&' B × × → 0 " #$%&'()*+,-,* &5 B% ∈ ≥ ∈ 0 0 CD."&;3E#FG4H#;,.I!"#$0 2JA=)*K!L "#$%,!4!L&2 A!:#+"#$3*%3%33A2.E/. 302JA=A2;%. M#N%2OM#2#5 0 ()*+,%-* ()* P"!A#.E&Q3N3R?!L<" K!L0 6DSA#T332FA#.E//K!L#A#.E)D!L* A#;+<?K!LI!20 +(,-./ /UH%K!LVN%+N.E#O3K!LVN0 W $V!(?%JXAY!K!L5K!L/% K!L3%K!L.=& 3+/%K!LVN0 ./ 01/234 ZK8W5 5&2JA=/.30 [L;FD/%AF#G*J,#30 [A=.=& 3+/@7!& G*J0 ./01 02&'2&'3456 (%6/%7*%,%08*+,%.,234*%'*%9:2)*+,%-* (/0-+--1.2 %&' !\]^_^`B_9`7_8`7`7]8K!L%)%\]!\0 +(34567-181.2( %&' / ^ Q 7> a]79K!Lb#`c\\0 (3456789- %&' / 9 Q d /b//`8Y!3K!LVN0 :(34567;<-( %&' / ^ Q 7B ]J;!\^K!L0 ! !"#!"#$ ( =(345675 %& 5/ b Q 7B ]3L$9K!L0 %& $ 5))A)*K!L$ / b Q 7B %/ d Q d /%/ d Q b a./ d Q e P0 %& > 5/ c Q 8 /Q 8 8 ]8K!L0 ;.$<;=*>?@A%B/+C/ +D)*> $/4';<* . %&' / ^ Q 7> a] 79 K!Lb#`c0 (345678 9 - %&' / 9 Q d /b//`8Y!3K!LVN0. (%6/%7*%,%08*+,%.,234*%'*% 9: 2)*+,%-* (/0-+--1.2 %&' !]^_^`B_ 9 `7_8`7`7]8K!L%)%]!0