https://codeforces.net/contest/4/submission/174376175
My code:Check if sumtime is in $$$[minsum,maxsum]$$$,minsum is the sum of all the $$$mintime$$$ and maxsum is the sum of all the $$$maxtime$$$.Then greedy for the solution.
№ | Пользователь | Рейтинг |
---|---|---|
1 | tourist | 4009 |
2 | jiangly | 3839 |
3 | Radewoosh | 3646 |
4 | jqdai0815 | 3620 |
4 | Benq | 3620 |
6 | orzdevinwang | 3612 |
7 | Geothermal | 3569 |
8 | ecnerwala | 3494 |
9 | Um_nik | 3396 |
10 | gamegame | 3386 |
Страны | Города | Организации | Всё → |
№ | Пользователь | Вклад |
---|---|---|
1 | Um_nik | 164 |
2 | -is-this-fft- | 160 |
2 | maomao90 | 160 |
4 | atcoder_official | 158 |
4 | cry | 158 |
4 | awoo | 158 |
7 | adamant | 155 |
8 | nor | 154 |
9 | TheScrasse | 153 |
10 | Dominater069 | 152 |
https://codeforces.net/contest/4/submission/174376175
My code:Check if sumtime is in $$$[minsum,maxsum]$$$,minsum is the sum of all the $$$mintime$$$ and maxsum is the sum of all the $$$maxtime$$$.Then greedy for the solution.
Название |
---|
Not sure if greedy is applicable here, though I solved it with knapsack-like dp. Could you elaborate on your solution?
you are so close my guy. I took your code and only changed one thing. This is my submission: https://codeforces.net/contest/4/submission/178599913
can you spot what i noticed?
your first if condition in the while loop
`
when you update sumtime
you set sumtime to suntime — (maxtime[j] + mintime[j]) — why do you do this? The correct thing to do is to set sumtime to sumtime — (maxtime[j] — mintime[j]) — this is because at the start you have already taken away mintime[j] from sumtime, therefore, using maxtime[j] hours on the jth day means that you only have to takeaway (maxtime[j]-mintime[j]) more hours from sumtime.
hope this helps