!"#$%!"#& '()*+,- /()#0"1+2345675- 89#) → → → → → → ↓ → → → → → ! → ! → ! 89!) "#$%&'()*++,-./0*1%2)1134 ')'567 867 89 8 8:) 8 "+,&1,);+<+=>67?@"/0)A1%2)11 3B$5@1C1CDE+7=<-%&)F+<+=>D=)&1D*" 89$) "!.=@=@8)+,=B<+=>G)H$,=@<+=>" IJ=@,<KD?@=L$)MN+')'5O P:Q0>=DPR8S) <F"=%&)<+=>DT?@=')'5'%L$%& U8SK<K$<"V$5=B<+=>$" "=PP8U)=B<+=>D*?@=MN)')'5S8W"KWF') '5$%&1XY)" 89&)T=@=@PS8)&1<+=><Z+9?@=BF9 ?@=%A$%&')'5O"[>')'5O$%&8 )$D=B9<" V$5*<+=>?@<-%&)+QD=)&1" 890)T=@=@)&19?@67?@=')'5 =/)'% $%&')'59?@PP8K<K$<"=\\')'5?@=')'59 $<%&)<F]$C<[)$^_<FO`3O$%&')'5%A 3`$7+)OD=)<[)<K$%&)<[)$^$%&PU)QD]I" "?@B$598O88I "K" "=\\')'5:?@=')'51XY)$%&S8a)< F"KbK')'5:$/'()" 89:)T8U)+,<+=>#+,D5'0QD=)&1Q?@= NN+')'5&1P8M:?@ P8M:"I)'5$%&1XY) @+$cdeK+?@1XD)TG)PNN+')'5&18M:?@ O P8M:"V$5<+=>" =9fS`67fMU`f`fPU`fP`f`OfPS`fP` fM8M`fU `:)f " …………………….Ht………………………. Cán bộ coi thi không giải thích gì thêm! P ;< => !"#$%!"#& ?)@A Thi gian lm bi: 120 ph#t g h1 hb+ P 8M$ i → i ↑ i9) → i9) ↓ i → ↓ i → i i → i i → i i → i ↑ i → i ↓ i → i iO → iO ↓ i → ↓ i i! → ! i ! i!i ↓ !i9) → ! i9) ↓ B C-DE-F3G2(.GHIJ"K!0GL 8M 8 $ 8 P$ jI()')'5'% i4D''67 '=<F+@$cgBQ 67 iU → 67 ↓ i i4D''67 '=<FD])D;g 67 i → 67 ↓ i 67 i i → 67 i4D''9 '=<FD])D; 9 iU → 9 ↓ i 9 i → 9 i i4D'' '=<K+(<=D i → i ↑ i i4D'':) '=>=<FD]) :) i → :) ↓ i iT><[)%&))L@'' B+M(7-F3G2(.GHIJ6N3J+O3GHIJ"K0GL jgQ0PNN)&1D;=?@='''%8]?@='' 67i → 67 i ↑ jk3Q0Q<[)@+<[g>)X.<-%&)@)K@ <-%&)F $ P$ 8 8M$ WWPNNWWW −=⇒=⇒ 8N 8 S8U `P8N PRS S8PR `M8NP"M8N ====== 0i9 B 0 → B9i0 ↑ P 9i → 9 i ↑ U8N N8 !=<K ?@=''O bBX0D TH1#>=O O b'% iO → O ↓ i N8PN8P \PD=)9 B 0 f fN8P+= → +9f8lN8P"PUfP8U)fm U U8N U8P == fP8=n ifP → : 9 fU=> if → : 9 fS=> if → : 9 fPNa=> TH2:>=+- iO → O ↓ i N8MN8MN8M iO i → O N8PMN8MjN8P \PD=)9 B 0 f fN8MiN8PMfN8 += → +9f8lN8 "PUfPU8a)fm a U8N a8PU == ifP → : 9 fa=> if → : 9 fMU67 if → : 9 fa => ` 8N 8N `8N MU a8PU →==→== P$ P$ P$ N8M$ 8 P$ M8N M8U"PNN 8S"MN `NM8N U8PP ==== 67 ia → 67 i67 i O$CN8NMN8M oN8NMN8 N8PN8NM 1%NN8PN8PN8NM !"#$$%&'()*#(&$%&+, WRM8PWPNN U8UP M8U"P8N W W 8WPNN U8UP PS"NM8N WW`P8UWPNN U8UP M8PU"P8N W ≈×= ≈×=≈×= P$ $ 9i → 9i ↑ BB 9 i → 9 00 MU8MUa8P PS 8M SPU 8U 8PN N PS 8M N SPU 8U 8PN Pa PS8M 8MPaPS 8 PS 8PSPU <<⇒ < + + <⇒ << + − =⇒ − =⇒=+⇒ =+++ =++ 9@!k! ⇒ 9@!=n p9@ == == ⇒ = = ⇒ =+ =+ S 8PUU"S8N U8N"N8N S8N N8N MU8N 8PSU - - p9@! = = ⇒ = = ⇒ =+ =+ 8R a8S P8N 8N 8N 8PSR R . . P$ P$ M8 M8 M8 9i → 9 i ↑ BN8MBP8MB 67i → 67 i ↑ 000 I)'599 867 ?@ '% i → i 9 iU → 9 ↓ i N8MBB 67 i → 67 ↓ i 00 9 i → 9 i BB !FO67 I)'59 8 67 i → 67 i 0N8M0 QD]I67 = = ⇒ = =+ 8N 8N PUN PU M8N 8 8PP M8P fN8"SiN8"MUfPU8U) $ $ P8N Sa a8S 8N - == == =''?@='' 9 ii → i9 ↓ P b11% i9 → 9 i P#BX0D1%P 9 ii → i9 ↓ N8PN8PN8P NM8N P8N / ==⇒ 1%BX0D89 5T+,1C 9 ii → i9 ↓ P N8N8N8 i9 → 9 i N8N8jN8P M8N 8N8N / = + =⇒ U MM8N8NM8N 8NPM8N"PM8NM8P"P8N M8NM8NM8"P8N aM8NU8NM8N U8N8N"8NM8P"8N M8NM8NM8P"8N - =+= ==⇒== =⇒== =+=⇒ ==⇒== =⇒== ∑ ∑ − − − + + + 9iB → 9 B iB P 9iB → 9 B iB i → i iO → O i i → i M iO → O i U i D=)&1B'%f j D=)&1q2fN8MM+= ⇒ i 1%P?@fN8aMlN8MMfN8+= \P?@ P 8N U8 ` 8NP ==== + BfP8=n iBfP ⇒ : 9 fP=> iBf ⇒ : 9 f :) iBf ⇒ : 9 fU=> 40<+=>CL+@:) $ -01232432%56785"925:;5 M . PS 8PSPU <<⇒ < + + <⇒ << + − =⇒ − =⇒=+⇒ =+++ =++ 9 @!k! ⇒ 9 @!=n p 9 @ == == ⇒ = = ⇒ =+ =+ S 8PUU"S8N U8N"N8N S8N N8N MU8N 8PSU - - p 9 @! = = ⇒ = = ⇒ =+ =+ . ====== 0i 9 B 0 → B9i0 ↑ P 9 i → 9 i ↑ U8N N8 !=<K ?@=''O bBX0D TH1#>=O O b'% iO → O ↓ i N8PN8P PD=) 9 B 0 f fN8P+= → +9 f8lN8P"PUfP8U)fm U U8N U8P == fP8=n ifP → : 9 fU=> if → : 9 fS=> if → : 9 fPNa=> TH2:>=+ - iO → O ↓ i N8MN8MN8M iO i → O N8PMN8MjN8P PD=) 9 B 0 f fN8MiN8PMfN8. 67 i4D'' 9 '=<FD])D; 9 iU → 9 ↓ i 9 i → 9 i i4D''