CodeForces 377B---Preparing for the Contest(二分+贪心)
Time Limit:2000MS Memory Limit:262144KB 64bit IO Format:%I64d
& %I64u
377B
Description
Soon there will be held the world's largest programming contest, but the testing system still has m bugs. The contest organizer, a well-known university, has no choice
but to attract university students to fix all the bugs. The university has n students able to perform such work. The students realize that they are the only hope of the
organizers, so they don't want to work for free: the i-th student wants to getci 'passes'
in his subjects (regardless of the volume of his work).
Bugs, like students, are not the same: every bug is characterized by complexity aj, and every student has the level of his abilities bi.
Student i can fix a bug j only if the level of his abilities is not less than the
complexity of the bug: bi ≥ aj, and he does it in one day. Otherwise, the bug will have to be
fixed by another student. Of course, no student can work on a few bugs in one day. All bugs are not dependent on each other, so they can be corrected in any order, and different students can work simultaneously.
The university wants to fix all the bugs as quickly as possible, but giving the students the total of not more than s passes. Determine which students to use for that
and come up with the schedule of work saying which student should fix which bug.
Input
The first line contains three space-separated integers: n, m and s (1 ≤ n, m ≤ 105, 0 ≤ s ≤ 109) —
the number of students, the number of bugs in the system and the maximum number of passes the university is ready to give the students.
The next line contains m space-separated integers a1, a2, ..., am (1 ≤ ai ≤ 109) —
the bugs' complexities.
The next line contains n space-separated integers b1, b2, ..., bn (1 ≤ bi ≤ 109) —
the levels of the students' abilities.
The next line contains n space-separated integers c1, c2, ..., cn (0 ≤ ci ≤ 109) —
the numbers of the passes the students want to get for their help.
Output
If the university can't correct all bugs print "NO".
Otherwise, on the first line print "YES", and on the next line print m space-separated integers: the i-th
of these numbers should equal the number of the student who corrects the i-th bug in the optimal answer. The bugs should be corrected as quickly as possible (you must spend the minimum
number of days), and the total given passes mustn't exceed s. If there are multiple optimal answers, you can output any of them.
Sample Input
3 4 9
1 3 1 2
2 1 3
4 3 6
YES
2 3 2 3
3 4 10
2 3 1 2
2 1 3
4 3 6
YES
1 3 1 3
3 4 9
2 3 1 2
2 1 3
4 3 6
YES
3 3 2 3
3 4 5
1 3 1 2
2 1 3
5 3 6
NO
Hint
Consider the first sample.
The third student (with level 3) must fix the 2nd and 4th bugs (complexities 3 and 2 correspondingly) and the second student (with level 1) must fix the 1st and 3rd bugs (their complexity also equals 1). Fixing each bug takes one day for each student, so
it takes 2 days to fix all bugs (the students can work in parallel).
The second student wants 3 passes for his assistance, the third student wants 6 passes. It meets the university's capabilities as it is ready to give at most 9 passes.
题意给出m个bug,每一个bug有个复杂程度,有n个同学每一个同学有自己的能力值b,和想要的东西c,
假设雇佣第i个同学,那么能解决全部复杂程度小于等于b[i]的bug,每天一人仅仅能解决一个,学校要付出c,不论i攻克了几个bug
问,学校在付出不超过s,且最少的天数须要多少。
有两个限制,1.总和不能超过s,2.要求最少天数。
仅仅能限制一个,来求还有一个,假设求总和不能超过s,不好求,那么仅仅能求最少天数,二分枚举最少的天数,找出最小花费,得到最后的结果。
假设是时间为t,那么找出全部能力大于当前最大的bug的人,找出须要c最少的,使用优先队列维护,让找出的人工作t天,工作bug最大的t个,使得后面的bug能够找很多其它的人来修。
#include <cstdio>
#include <cstring>
#include <queue>
#include <algorithm>
using namespace std;
#define LL __int64
#define INF 0x3f3f3f3f
struct node
{
LL b , c , i ;
// bool operator < (const node &x) const {
// return c > x.c ;
// }
friend bool operator< (node n1, node n2) { return n1.c > n2.c; }
} p[200000] , q ;
priority_queue <node> que ;
struct node1
{
LL i , a ;
} bug[200000];
bool cmp(node x,node y)
{
return x.b > y.b ;
}
bool cmp1(node1 x,node1 y)
{
return x.a > y.a ;
}
LL last[110000] , now[110000 ] , n , m ,s ;
LL f(LL t)
{
while( !que.empty() ) que.pop();
LL i = 0 , j = 0 , ans = 0 , k ;
while(j < m)
{
while(i < n && p[i].b >= bug[j].a)
{
que.push( p[i] ) ;
i++ ;
}
if( que.empty() )
return s+1 ;
q = que.top();
que.pop();
ans += q.c ;
k = j+t ;
while(j < m && j < k)
{
now[ bug[j].i ] = q.i ;
j++ ;
}
}
return ans ;
}
int main()
{
LL i , j ;
memset(last,-1,sizeof(last));
scanf("%I64d %I64d %I64d", &n, &m, &s);
for(i = 0 ; i < m ; i++)
{
scanf("%I64d", &bug[i].a);
bug[i].i = i ;
}
sort(bug,bug+m,cmp1);
for(i = 0 ; i < n ; i++)
{
scanf("%I64d", &p[i].b);
p[i].i = i+1 ;
}
for(i = 0 ; i < n ; i++)
{
scanf("%I64d", &p[i].c);
}
sort(p,p+n,cmp);
LL low = 1 , mid , high = m , min1 ;
while( low <= high )
{
mid = (low+high)/2 ;
min1 = f(mid);
if( min1 <= s )
{
for(i = 0 ; i < m ; i++)
last[i] = now[i] ;
high = mid-1 ;
}
else
low = mid+1 ;
}
if( last[0] == -1 )
printf("NO\n");
else
{
printf("YES\n");
for(i = 0 ; i < m ; i++)
{
if(i == m)
printf("%d\n", last[i]);
else
printf("%d ", last[i]);
}
}
return 0;
}
CodeForces 377B---Preparing for the Contest(二分+贪心)的更多相关文章
- codeforces 377B Preparing for the Contest 二分+优先队列
题目链接 给你m个bug, 每个bug都有一个复杂度.n个人, 每个人有两个值, 一个是能力值, 当能力值>=bug的复杂度时才可以修复这个bug, 另一个是雇佣他需要的钱,掏一次钱就可以永久雇 ...
- Codeforces Round #222 (Div. 1) B. Preparing for the Contest 二分+线段树
B. Preparing for the Contest 题目连接: http://codeforces.com/contest/377/problem/B Description Soon ther ...
- Codeforces Gym 100231B Intervals 线段树+二分+贪心
Intervals 题目连接: http://codeforces.com/gym/100231/attachments Description 给你n个区间,告诉你每个区间内都有ci个数 然后你需要 ...
- Codeforces 639E - Bear and Paradox(二分+贪心)
Codeforces 题目传送门 & 洛谷题目传送门 原来 jxd 作业里也有我会做的题 i 了 i 了 首先这种题目的套路就是先考虑对于一个固定的 \(c\),怎样求出得分最高的策略,而类似 ...
- CodeForces - 847B Preparing for Merge Sort 二分
http://codeforces.com/problemset/problem/847/B 题意:给你n个数(n<2e5)把它们分成若干组升序的子序列,一行输出一组.分的方法相当于不断找最长递 ...
- Ice Cream Tower(The 2016 ACM-ICPC Asia China-Final Contest 二分&贪心)
题目: Mr. Panda likes ice cream very much especially the ice cream tower. An ice cream tower consists ...
- 【CF】222 Div.1 B Preparing for the Contest
这样类似的题目不少,很多都是一堆优化条件求最优解,这个题的策略就是二分+贪心.对时间二分, 对费用采用贪心. /* 377B */ #include <iostream> #include ...
- 2016-2017 ACM-ICPC CHINA-Final Ice Cream Tower 二分+贪心
/** 题目:2016-2017 ACM-ICPC CHINA-Final Ice Cream Tower 链接:http://codeforces.com/gym/101194 题意:给n个木块,堆 ...
- Codeforces_732D_(二分贪心)
D. Exams time limit per test 1 second memory limit per test 256 megabytes input standard input outpu ...
随机推荐
- Python 脚本帮你找出微信上删除了你的“好友“
- windows下安装mysql5.6.13的主从复制
如下操作均在vmware 虚拟机中winows xp 测试成功 中间走了很多弯路,网上的很多资料都是针对5.1以前的版本,在新版中根本无法使用,所以根据自己的实践整理了这篇文章 主服务:192.168 ...
- Eclipse中使用版本控制----Git
之前在做软件开发的过程中使用的版本控制软件大多是cvs,svn等等,这些都属于cvcs,及中央版本控制系统,其特点是存在一个中央库,开发者首先从中央库中下载代码,编辑,然后提交.很明显的一个特点就是使 ...
- 老斜两宗事-七层代理模式还是IP层VPN
1.七层代理模式还是IP层VPN 非常多人会问,我究竟是使用代理模式呢,还是使用VPN模式,假设我想数据在中间不安全的链路上实现加密保护的话.这个问题有一个背景.那就是,你想保护你的数据,能够使用VP ...
- java-多线程安全问题
1. 安全问题产生原因 多个线程操作共享数据. 操作共享数据的线程代码有多条.当一个线程在执行操作共享数据的多条代码过程中,其他线程参与了计算,就会产生线程安全问题. 2. 解决方案 java中用同步 ...
- Linq To sql入门练习 Lambda表达式基础
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; usin ...
- office文档转pdf
这里贴下代码吧,没啥好说的. using System; using System.Collections.Generic; using System.Linq; using System.Text; ...
- oracle如何设置show parameter显示隐含参数
在sqlplus中shwo parameter是显示不了隐藏参数的,需要做一个处理,如下所示: 以SYS用户登录: C:\Documents and Settings\guogang>sq ...
- cocos2d-x在win32和iOS、android下获取当前系统时间的方法
最近在游戏里要显示当前系统时间的功能,网上一搜很多写着获取的方法,大都是如下 struct cc_timeval now; CCTime::gettimeofdayCocos2d(&now, ...
- Html.Partial("")与Html.RenderPartial("")区别
文章有点长,但大多是代码,看看很快的,不要压力太大.网上有很多关于这两个方法的区别,都说出了它本质的区别(不看代码,只看这个结论,就已经足够了,如果觉得有必要从代码中得出这个结论,那就继续往下看),这 ...