传送门 最关键的想法就是每个位置一定用的是当前能用的最便宜的水,因为到后面可能有更便宜的 然后其他还没用上的水我们也留着,假装此时已经买了,但是如果发现后面有更优的再反悔也不迟 每相邻两个朋友之间我们把最便宜的一些水消耗了 然后考虑有朋友来送水了 设这个朋友的水的最大体积为 $mx$,价格为 $cst$,如果系统完全装得下 $mx$ 的水那么 $\text{我全都要}$ 即可 如果装不下那么看看系统里最贵的那个单位水 $x$,如果价格大于 $cst$ ,那么我们就不要这个 $x$ 了,直接反悔,…

Problem F. Fibonacci SystemTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=86821#problem/B Description Little John studies numeral systems. After learning all about fixed-base systems, he became inte…

本来准备比完赛就写题解的, 但是一拖拖了一星期, 唉 最后一题没搞懂怎么做,恳请大神指教 欢迎大家在评论区提问. A Mind the Gap 稳定版题面 https://cn.vjudge.net/problem/CodeForces-967A 水题, 不写题解了, 浪费空间 细节处理见代码 #include<bits/stdc++.h> #define int long long using namespace std; struct tim{ int h, m; }t[1001]; in…

The winter is coming and all the experts are warning that it will be the coldest one in the last hundred years. Freddy needs to make sure that his garden does not sustain any damage. One of the most important tasks is to make sure that no water remai…

A. Currency System in Geraldion Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/560/problem/A Description A magic island Geraldion, where Gerald lives, has its own currency system. It uses banknotes of several values. But th…

Error Correct System Time Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 527B Description Ford Prefect got a job as a web developer for a small company that makes towels. His current work ta…

C. Watering Flowers 题目连接: http://www.codeforces.com/contest/617/problem/C Descriptionww.co A flowerbed has many flowers and two fountains. You can adjust the water pressure and set any values r1(r1 ≥ 0) and r2(r2 ≥ 0), giving the distances at which t…

C. Registration system Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/problemset/problem/4/C Description A new e-mail service "Berlandesk" is going to be opened in Berland in the near future. The site administration wants to…

A. Currency System in Geraldion Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/560/problem/A Description A magic island Geraldion, where Gerald lives, has its own currency system. It uses banknotes of several values. But t…

E. Berland Local Positioning System Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/534/problem/E Description In Berland a bus travels along the main street of the capital. The street begins from the main square and looks l…