1 |
a |
1 |
b |
1 |
c |
1 |
a |
1 |
b |
1 |
c |
1 |
b |
1 |
a |
1 |
c |
1 |
b |
a-b |
ba |
b-c |
cb |
a-b |
a |
b-c |
c |
1 |
a |
1 |
c |
1 |
a |
1 |
b |
1 |
c |
A.a1=-2,d=3 | B.a1=2,d=-3 | C.a1=-3,d=2 | D.a1=3,d=-2 |
A.239 | B.269 | C.699 | D.2009 |
5 |
2 |
3 |
2 |
1 |
6 |
1 |
3 |
A.{4,5,6} | B.{6,7,8,9} | C.{3,4,5} | D.{3,4,5,6} |
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