题目链接: http://codeforces.com/problemset/problem/671/A 题目大意: A和B在一张二维平面上,平面上有N个垃圾,垃圾桶只有一个在T,问把所有垃圾全扔进垃圾桶最少走多远.一次只能拿一个垃圾.允许一个人走另一个人停下来. (1 ≤ n ≤ 100 000)  (0 ≤ xi, yi ≤ 109) 题目思路: [模拟] 因为每次只能携带一个垃圾,大部分垃圾都是人扔完上一个垃圾后,从垃圾桶出发去捡的. 而最多有两个垃圾不是被人从垃圾桶出发完再扔到垃圾桶.…

题目链接:http://codeforces.com/problemset/problem/671/A 题目大意:给你两个人的位置和一个箱子的位置,然后给出n个瓶子的位置,要求让至少一个人去捡瓶子放到箱子里面去,一次只能拿一个瓶子,求把全部瓶子捡完之后的距离总和最小.解题思路:开始有两个起点A,B.除了从A或B出发拿瓶子并回到箱子距离不确定,其他时候肯定要从箱子到瓶子再回到箱子,距离就是dis(箱子到瓶子)*2.关于从A,B出发拿瓶子,分三种情况:①只有A拿②只有B拿③A拿一个瓶子,B拿一个瓶子…

暴力. 每个人找到一个入口,也就是从回收站到这个入口走的路程由人的位置到入口的路程来替代. 因此,只要找两个人分别从哪里入口就可以了.注意:有可能只要一个人走,另一人不走. #pragma comment(linker, "/STACK:1024000000,1024000000") #include<cstdio> #include<cstring> #include<cmath> #include<algorithm> #includ…

感觉很简单,就是讨论一下 #include <stdio.h> #include <string.h> #include <algorithm> #include <math.h> using namespace std; typedef pair<double,int>pii; ; double x[N],y[N]; pii a[N],b[N]; double dis(double x1,double y1,double x2,double y…

C. Recycling Bottles time limit per test: 2 seconds memory limit per test: 256 megabytes input: standard input output: standard output It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles fr…

A. Recycling Bottles 题目连接: http://www.codeforces.com/contest/671/problem/A Description It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles from the ground and put them into a recycling bin.…

C. Recycling Bottles   It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles from the ground and put them into a recycling bin. We can think Central Perk as coordinate plane. There are n bott…

C. Recycling Bottles time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles from t…

 Recycling Bottles time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles from the…

  C. Recycling Bottles time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles from…

题目链接: C. Recycling Bottles time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles…

C. Recycling Bottles time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles from t…

time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles from the ground and put them in…

题目链接: http://codeforces.com/contest/672/problem/C 题意: 公园里有两个人一个垃圾桶和n个瓶子,现在这两个人需要把所有的瓶子扔进垃圾桶,给出人,垃圾桶,瓶子的坐标,问两个人需要走的最短距离和. 题解: 首先必须要有一个人先去检一个瓶子,然后走到垃圾桶,这个可以枚举,接下来就是考虑另一个人是也捡一个瓶子然后走到垃圾桶(这个可以预处理出最优的,和次优的,因为如果最优的那个刚好被第一个人拿走了,那就拿次优的)还是在原地不动,接下去就是固定的了,求剩下的所…

It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles from the ground and put them into a recycling bin. We can think Central Perk as coordinate plane. There are n bottles on the ground, the…

J. Bottles time limit per test 2 seconds memory limit per test 512 megabytes input standard input output standard output Nick has n bottles of soda left after his birthday. Each bottle is described by two values: remaining amount of soda ai and bottl…

http://codeforces.com/problemset/problem/730/J 题意:有n个瓶子,每个瓶子有一个当前里面的水量,还有一个瓶子容量,问要把所有的当前水量放到尽量少的瓶子里至少需要几个瓶子,还有最少需要倒的水量(把一个瓶子的水倒到另一个瓶子的总水量). 思路:是一个背包dp,dp[i][j] 表示选择i个瓶子容量为j的时候当前拥有的最大的水量.不过第三层循环当时不知道应该怎么写. #include <cstdio> #include <cstring> #…

<题目链接> 题目大意: 有n个瓶子,各有水量和容量.现在要将这写瓶子里的水存入最少的瓶子里.问你最少需要的瓶子数?在保证瓶子数最少的情况下,要求转移的水量最少. 解题分析:首先,最少的瓶子数肯定可以通过贪心来简单求解.然后就是将所有瓶子的水量作为01背包的总体积,然后就是$dp[i][j]$表示前$i$个物品选了水量为$j$的最大容量.本题的这种逆向思维有点像那道小偷抢银行的01背包题.但是因为本题规定了需要选取的那些容量大的物品,所以略有不同.对这$n$个物品进行01背包,杯子的水量看成体…

672A Summer Camp 题意: 1-n数字连成一个字符串, 给定n , 输出字符串的第n个字符.n 很小, 可以直接暴力. Code: #include <bits/stdc++.h> using namespace std; int main() { int n; cin >> n; int begin = 1; for(;;) { int dig = log10(begin) + 1; if(n <= dig) { char ss[10]; sprintf(ss…

Problems     # Name     A Summer Camp standard input/output 1 s, 256 MB    x3197 B Different is Good standard input/output 2 s, 256 MB    x2870 C Recycling Bottles standard input/output 2 s, 256 MB    x664 D Robin Hood standard input/output 1 s, 256…

模拟 A - Summer Camp #include <bits/stdc++.h> int a[1100]; int b[100]; int len; void init() { int i = 1, tot = 1; while (tot <= 1010) { int t = i, c = 0; while (t) { b[c++] = t % 10; t /= 10; } for (int i=c-1; i>=0; --i) { a[tot++] = b[i]; } i++…

C. Recycling Bottles time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles from t…

C. Recycling Bottles time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output It was recycling day in Kekoland. To celebrate it Adil and Bera went to Central Perk where they can take bottles from t…

题目链接:http://codeforces.com/problemset/problem/315/A 题目意思:有n个soda bottles,随后给出这n个soda bottles的信息.已知第 i 个bottle来自品牌ai,你可以用这个品牌 ai 来开所有属于品牌bi 的bottles.注意,other特别用黑色粗体来强调,表明该行的除外,也就是说,假如i = 1(隐含的),ai = 1,bi = 1,这个bottle 1 是不能被打开的.需要找出无论用什么方式都不能打开的bottle的…

A.Toda 2 思路:可以有二分来得到最后的数值,然后每次排序去掉最大的两个,或者3个(奇数时). /************************************************ *Author* : Ray(siludose) *Created Time* : 2016��10��24�� ����һ 15ʱ00��28�� **Problem** : /media/ray/708898B888987E72/Users/Administrator/Desktop/2016…

Interesting drink 题目链接: http://codeforces.com/contest/706/problem/B Description Vasiliy likes to rest after a hard work, so you may often meet him in some bar nearby. As all programmers do, he loves the famous drink "Beecola", which can be bough…

A. Guest From the Past 题目连接: http://www.codeforces.com/contest/625/problem/A Description Kolya Gerasimov loves kefir very much. He lives in year 1984 and knows all the details of buying this delicious drink. One day, as you probably know, he found hi…

C. CinderellaTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100685/problem/C Description Cinderella is given a task by her Stepmother before she is allowed to go to the Ball. There are N (1 ≤ N ≤ 1000) bottles with water in th…

Problem K. Kitchen Robot Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100610 Description Robots are becoming more and more popular. They are used nowadays not only in manufacturing plants, but also at home. One programmer wit…

A. HQ9+ time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output HQ9+ is a joke programming language which has only four one-character instructions: "H" prints "Hello, World!", "…