codeforces471B
MUH and Important Things
It's time polar bears Menshykov and Uslada from the zoo of St. Petersburg and elephant Horace from the zoo of Kiev got down to business. In total, there are ntasks for the day and each animal should do each of these tasks. For each task, they have evaluated its difficulty. Also animals decided to do the tasks in order of their difficulty. Unfortunately, some tasks can have the same difficulty, so the order in which one can perform the tasks may vary.
Menshykov, Uslada and Horace ask you to deal with this nuisance and come up with individual plans for each of them. The plan is a sequence describing the order in which an animal should do all the n tasks. Besides, each of them wants to have its own unique plan. Therefore three plans must form three different sequences. You are to find the required plans, or otherwise deliver the sad news to them by stating that it is impossible to come up with three distinct plans for the given tasks.
Input
The first line contains integer n (1 ≤ n ≤ 2000) — the number of tasks. The second line contains n integers h1, h2, ..., hn (1 ≤ hi ≤ 2000), where hi is the difficulty of the i-th task. The larger number hi is, the more difficult the i-th task is.
Output
In the first line print "YES" (without the quotes), if it is possible to come up with three distinct plans of doing the tasks. Otherwise print in the first line "NO" (without the quotes). If three desired plans do exist, print in the second line ndistinct integers that represent the numbers of the tasks in the order they are done according to the first plan. In the third and fourth line print two remaining plans in the same form.
If there are multiple possible answers, you can print any of them.
Examples
4
1 3 3 1
YES
1 4 2 3
4 1 2 3
4 1 3 2
5
2 4 1 4 8
NO
Note
In the first sample the difficulty of the tasks sets one limit: tasks 1 and 4 must be done before tasks 2 and 3. That gives the total of four possible sequences of doing tasks : [1, 4, 2, 3], [4, 1, 2, 3], [1, 4, 3, 2], [4, 1, 3, 2]. You can print any three of them in the answer.
In the second sample there are only two sequences of tasks that meet the conditions — [3, 1, 2, 4, 5] and [3, 1, 4, 2, 5]. Consequently, it is impossible to make three distinct sequences of tasks.
sol:XJB构造三串不同的字典序最小的序列,十分容易,两个相同的就两两交换,多个相同的就用第一个与第二个或第三个(最后一个)交换,这样就凑到三种情况了
Ps:可能构造多种会比较困难,感觉只会n!的方法(GG)
#include <bits/stdc++.h>
using namespace std;
typedef int ll;
inline ll read()
{
ll s=;
bool f=;
char ch=' ';
while(!isdigit(ch))
{
f|=(ch=='-'); ch=getchar();
}
while(isdigit(ch))
{
s=(s<<)+(s<<)+(ch^); ch=getchar();
}
return (f)?(-s):(s);
}
#define R(x) x=read()
inline void write(ll x)
{
if(x<)
{
putchar('-'); x=-x;
}
if(x<)
{
putchar(x+''); return;
}
write(x/);
putchar((x%)+'');
return;
}
#define W(x) write(x),putchar(' ')
#define Wl(x) write(x),putchar('\n')
const int N=;
int n,Hash[N];
struct data
{
int Shuz;
}a[N];
int Pailie[N];
int Used[N];
vector<int>Jih[N];
int main()
{
int i,j,Fas=;
R(n);
for(i=;i<=n;i++)
{
R(a[i].Shuz); Hash[++*Hash]=a[i].Shuz;
}
sort(Hash+,Hash+*Hash+);
*Hash=unique(Hash+,Hash+*Hash+)-Hash-;
for(i=;i<=n;i++)
{
a[i].Shuz=lower_bound(Hash+,Hash+*Hash+,a[i].Shuz)-Hash;
Jih[a[i].Shuz].push_back(i);
}
for(i=;i<=*Hash&&Fas<;i++)
{
if(Jih[i].size()==) Fas*=;
else if(Jih[i].size()>) Fas=;
}
if(Fas<) return *puts("NO");
puts("YES");
for(int Step=;Step<=;Step++)
{
bool Bo=;
for(i=;i<=*Hash;i++)
{
if(Bo)
{
Used[i]=;
for(j=;j<Jih[i].size();j++) W(Jih[i][j]);
continue;
}
if(Jih[i].size()==)
{
W(Jih[i][]); continue;
}
else if(Jih[i].size()==)
{
if(Used[i]==)
{
W(Jih[i][]); W(Jih[i][]); Bo=;
Used[i]++;
}
else if(Used[i]==)
{
W(Jih[i][]); W(Jih[i][]); Bo=;
Used[i]++;
}
else
{
W(Jih[i][]); W(Jih[i][]);
}
}
else
{
if(Used[i]==)
{
for(j=;j<Jih[i].size();j++) W(Jih[i][j]);
Bo=;
Used[i]++;
}
else if(Used[i]==)
{
W(Jih[i][]); W(Jih[i][]);
for(j=;j<Jih[i].size();j++) W(Jih[i][j]);
Bo=;
Used[i]++;
}
else
{
W(Jih[i][Jih[i].size()-]);
for(j=;j<Jih[i].size()-;j++) W(Jih[i][j]);
W(Jih[i][]);
Bo=;
}
}
}
puts("");
}
return ;
}
/*
input
4
1 3 3 1
output
YES
1 4 2 3
4 1 2 3
4 1 3 2
*/
codeforces471B的更多相关文章
随机推荐
- PAT A1150 Travelling Salesman Problem (25 分)——图的遍历
The "travelling salesman problem" asks the following question: "Given a list of citie ...
- 数据库隔离级别深入理解(ORACLE)
TRANSACTION_READ_UNCOMMITTED 1 这种隔离级别最低,脏读,不可重复读,幻读都会发生,我用的oracle,并没有支持这个级别,不作研究. TRANSACTION_READ_C ...
- xrange 和range的区别
>>> xrange(5)xrange(5)>>> list(xrange(5))[0, 1, 2, 3, 4]>>> xrange(1,5)xr ...
- SkylineGlobe 如何使用二次开发接口创建粒子效果
SkylineGlobe在6.6版本,ICreator66接口新增加了CreateEffect方法,用来创建粒子效果对象: 以及ITerrainEffect66对象接口,可以灵活设置粒子效果对象的相关 ...
- php中按值传递和按引用传递的一个问题
php中传递变量默认是按照值传递. 简单举个例子: <?php function testArray($arr){// &$arr $arr = array(1,2,3,); } $ar ...
- Luogu1084 NOIP2012D2T3 疫情控制 二分答案、搜索、贪心、倍增
题目传送门 题意太长就不给了 发现答案具有单调性(额外的时间不会对答案造成影响),故考虑二分答案. 贪心地想,在二分了一个时间之后,军队尽量往上走更好.所以我们预处理倍增数组,在二分时间之后通过倍增看 ...
- RabbitMQ 优先级队列-为队列赋权
RabbitMQ 消息收发是按顺序收发,一般情况下是先收到的消息先处理,即可以实现先进先出的消息处理.但如果消息者宕机或其他原因,导致消息接收以后,未确认,那么消息会重新Requeue到队列中,就打破 ...
- 分布式监控系统Zabbix--完整安装记录 -添加web页面监控
通过zabbix做web监控,不仅仅可以监控到站点的响应时间,还可以根据站点返回的状态码或响应时间做报警设置,比如说对某个url进行监控,当访问返回的状态码是非200状态时都报警(创建触发器即可).下 ...
- taro之React Native 端开发研究
初步结论:如果想把 React Native 集成到现有的原生项目中,不能使用taro的React Native 端开发功能(目前来说不能实现,以后再观察). RN开发有2种模式: 1.一是原生A ...
- vue element-ui 动态上传
上传填写完毕的幼儿及体测数据文件,上传成功后会自动导入该文件的数据 <el-upload :action="UploadUrl()" :on-success="Up ...