| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| m |
| m |
| x2+y2 |
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| b |
| 72+(-1)2 |
| 2 |
| a |
| b |
| a |
| 32+(-2)2 |
| 13 |
| b |
| 42+12 |
| 17 |
| a |
| b |
| a |
| b |
| a |
| b |
| ||||
|
|
| 10 | ||||
|
10
| ||
| 221 |
| a |
| b |
10
| ||
| 221 |
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