Hello, all! Can you share some problems which we try to optimize the answer? Last two years we had such tasks in IOI, so it would be nice if you share some other problems you know!
Thanks in advance!
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What do you mean by "we try to optimize the answer" ?
Well, we try to find the best answer we can, but not totally optimal. However, non-optimal answers also gain points. Refer to IOI 2017 problem Nowruz.
Also, as far as I know these problems never have real optimal solutions and they are NP.
Sometimes you can find optimal bound by doing dp. This year's BOI task flash was really nice. http://boi2019.eio.ee/tasks/