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(1) 12¸öíÀÂëÉèΪa1,a2,...,a12;
(2) a>b ±íʾa±ÈbÖØ,ÒÀ´ËÀàÍÆ ;
(3) ´ÎƷΪA;
Step 1: a1,a2,a3,a4____a5,a6,a7,a8
|
_________________________________________________________
| |
if left=right |
(A is must in a9--a12) |
(a1=a2=...=a8) |
step 2: a9,a10,a11___a1,a2,a3 |
| |
-------------------------------------------- |
| | | |
if left=right if left>right the third |
##(A=a12) (A is in a9--a11) case is |
##(A is weighter) similar to |
step 3: a12___a1 a9____a10 the second |
| | case. |
you can know either A is ----------------- |
weighter or lighter than a1 | | |
if left=right if left>right |
| | |
##(A is a11) ##(A is a9) |
|
|
----------------------------------------------------------
| |
if left>right if left<right
(A is in a1--a8) ( similar to the second case)
step 2:
a1,a2,a3,a5,a6____a9--a12,a4
|
------------------------------------------------
| | |
if left=right if left>right if left<right
(A is in a7,a8) (A is in a1,a2,a3) (A is in lighter a5,a6
(A is lighter) (A is weight) or weighter a4)
step 3: a7_____a1 a1_____a2 a5,a4______a1,a2
| | |
------------ ------------ ------------------------
| | | | | | |
if "=" if "<" if "=" if"!=" if "=" if "<" if">"
*(A is a8) *(A is a7) *(A is a3) *(A is the *(A is a6) *(A is a5) a4
weighter one) *(lighter) *(lighter) weight
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¡ù ÐÞ¸Ä:£®yxdm ÓÚ Feb 19 20:48:38 Ð޸ı¾ÎÄ£®[FROM: alioth.hit.edu.c]
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