Hello everyone, can anyone tell me how to solve this problem (or how to solve this kind of problems) ? 
remove repeated lines
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ECPC Problem A) GCDHBD
Revision en1, by KNOW_ME_IF_YOU_CAN, 2021-02-19 23:22:48
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| Rev. | Lang. | By | When | Δ | Comment | |
|---|---|---|---|---|---|---|
| en1 |
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KNOW_ME_IF_YOU_CAN | 2021-02-19 23:22:48 | 380 | Initial revision (published) |
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