Can someone give some hints? I have absolutely no clue how heap or anything else fits into this? Thank you!
Can someone give some hints? I have absolutely no clue how heap or anything else fits into this? Thank you!
# | User | Rating |
---|---|---|
1 | tourist | 3690 |
2 | jiangly | 3647 |
3 | Benq | 3581 |
4 | orzdevinwang | 3570 |
5 | Geothermal | 3569 |
5 | cnnfls_csy | 3569 |
7 | Radewoosh | 3509 |
8 | ecnerwala | 3486 |
9 | jqdai0815 | 3474 |
10 | gyh20 | 3447 |
# | User | Contrib. |
---|---|---|
1 | maomao90 | 174 |
2 | awoo | 164 |
3 | adamant | 162 |
4 | TheScrasse | 160 |
5 | nor | 158 |
6 | maroonrk | 156 |
7 | -is-this-fft- | 152 |
8 | orz | 146 |
9 | pajenegod | 145 |
9 | SecondThread | 145 |
Name |
---|
I'm not completely sure, but this approach should work — binary search on the final answer.
Assume the answer is <=x. Now, mark arr[i][j]=1 if grid[i][j]<=x and 0 otherwise. Build connected components of 1's in arr. Now the answer is <=x if both the source and destination are 1 and lie in the same connected component of arr. Binary search on x to get your answer.