|x-y| |
1+|x-y| |
|x-y| |
1+|x-y| |
|x-y| |
1+|x-y| |
|y-x| |
1+|y-x| |
|x-z| |
1+|x-z| |
x |
1+x |
1 |
1+x |
1 | ||
|
|x-y|+|y-z| |
1+|x-y|+|y-z| |
|x-y| |
1+|x-y|+|y-z| |
|y-z| |
1+|x-y|+|y-z| |
|x-y| |
1+|x-y| |
|y-z| |
1+|y-z| |
n+2 |
n+1 |
n+1 |
n |
1 |
a |
1 |
b |
1 |
c |
6 |
5 |
2 |
7 |
a+1 |
a-1 |
a |
2 |
6 |
3 |
7 |
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