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| 6 | -is-this-fft- | 158 |
| 7 | awoo | 156 |
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| 9 | Dominater069 | 153 |
| 9 | nor | 153 |
ACL Beginner Contest 1
Can't find any announcement for ACL Beginner Contest, so creating this to discuss problems.
How to solve E?
I tried to make 9 segment tree for each 1 — 9 digits but couldn't find how to do update query where setting everything between l to r to zero when removing digit and to one when adding it.
