| ID | NAME | QUALITY | USERS | ACC % | DIFFICULTY C I |
|---|---|---|---|---|---|
| 5143 | Binary Integer | 53 |
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| 5146 | Experiment on a … Cable | 16 |
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| 5144 | Cryptography Reloaded (Act I) | 34 |
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| 5145 | Déjà vu | 17 |
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| 5147 | Fire-Control System | 37 |
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| 5149 | History of Languages | 32 |
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| 5150 | Junk-Mail Filter | 144 |
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| 5142 | A Pair of Graphs | 1 | 70 |
|
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| 5148 | Get-Together at Stockholm | 1 | 56 |
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