Azuma

1.  L* y* p# K, }) r& P
1-6 vs 7-12! g  }4 E) }) u0 h9 M! I3 U) \5 T
if 1-6 = 7-12     13 is fake
8 G% N- L% R( e9 f) A0 ^2 r  ~. z
7 Y, R8 _" r# o8 f1 K% y& nif not # x2 m5 s3 q. K4 s5 j7 Y
$ W9 V  N- _5 _/ Z& I) [) A
Weight the 2 time ) P  Y9 M- S( F' D) G' A( b3 p

( U( Y2 }% Q& R& Z& Y; n3 uSuppose 1-6> 7-12
0 x* t: {  G: |; z' m; v5 }2 e
) c5 l# }( l; ]1-3 vs 4-6 9 o3 G" B* ~5 L: X- r

8 s3 `  w) m( v5 t9 O7 RThen Weight the Third
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" s# C9 @+ Z. x5 G4 c+ R1 R% S7 JSuppose 4-6 > 1-32 }7 k$ d* Z, L* O( S
3 e) ]  i* t; {4 M& h- u, F$ Q
Just like the first Step  S6 B6 b( p  h+ b
% |8 Z6 _$ ?% ~( h& y
4 vs 5 . I9 g4 U: F. _# x) I8 G' S) ]2 a0 a

% B  s8 H& S* u9 a, Eif 4=5 6 is the fake one 6 A" x3 R3 y% J) [

4 m4 h6 _3 @8 k2 ]if 4>5  4 is the fake one
( V: B& @2 x0 ?0 H# M
# s: ?0 F' c+ E! a' jand so on......................