| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 555 | DEMC114 DE-MC-114 客户集合A={1,2,3}、B={3,4},跨渠道独立客户数是? | 0 / 0 | 2 | |
| 635 | DEMC194 DE-MC-194 集合A={1,2,3,4}、B={3,4,5},全站独立用户数? | 0 / 0 | 2 |
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