# | User | Rating |
---|---|---|
1 | ecnerwala | 3649 |
2 | Benq | 3581 |
3 | orzdevinwang | 3570 |
4 | Geothermal | 3569 |
4 | cnnfls_csy | 3569 |
6 | tourist | 3565 |
7 | maroonrk | 3531 |
8 | Radewoosh | 3521 |
9 | Um_nik | 3482 |
10 | jiangly | 3468 |
# | User | Contrib. |
---|---|---|
1 | maomao90 | 174 |
2 | awoo | 164 |
3 | adamant | 161 |
4 | TheScrasse | 159 |
5 | nor | 158 |
6 | maroonrk | 156 |
7 | -is-this-fft- | 152 |
8 | SecondThread | 147 |
9 | orz | 146 |
10 | pajenegod | 145 |
Name |
---|
your unordered_map got an anti-hash test(unordered_map worst case look time O(n) due to all hashes colliding with each other). And because MS C++ 2017 is a different compiler, so unordered map hashing works a bit different. In whatever way, the three should get timelimit anyways. I recommend you not to use unordered_map in hackable contests or in sites that have system testing afterwards like codeforces.
At least it could have given TLE at the time of contest so i would have changed the unordered_map to map.
Sadly, authors usually don't usually think of anti-hashing tests but hackers do. Here is a really cool blog which helps if you want to use unordered_map.
But here all keys are ints and not int64_t/long longs, so their hashes do not (should not?) collide, so what's the real reason?
Numbers till $$$10^9$$$. At least not all hashes collide, but a lot of them. If numbers were only till $$$10^6$$$ or lower, I guess it was gonna pass.
Yeah, I did not realize that the hash function includes % bucket_count, thank you