hdu 4941 Magical Forest （map容器）

Magical Forest

Time Limit: 24000/12000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)
Total Submission(s): 135    Accepted Submission(s): 69

Problem Description

There is a forest can be seen as N * M grid. In this forest, there is some magical fruits, These fruits can provide a lot of energy, Each fruit has its location(Xi, Yi) and the energy can be provided Ci. 

However, the forest will make the following change sometimes: 
1. Two rows of forest exchange. 
2. Two columns of forest exchange. 
Fortunately, two rows(columns) can exchange only if both of them contain fruits or none of them contain fruits. 

Your superior attach importance to these magical fruit, he needs to know this forest information at any time, and you as his best programmer, you need to write a program in order to ask his answers quick every time.

 

Input

The input consists of multiple test cases. 

The first line has one integer W. Indicates the case number.(1<=W<=5)

For each case, the first line has three integers N, M, K. Indicates that the forest can be seen as maps N rows, M columns, there are K fruits on the map.(1<=N, M<=2*10^9, 0<=K<=10^5)

The next K lines, each line has three integers X, Y, C, indicates that there is a fruit with C energy in X row, Y column. (0<=X<=N-1, 0<=Y<=M-1, 1<=C<=1000)

The next line has one integer T. (0<=T<=10^5)
The next T lines, each line has three integers Q, A, B. 
If Q = 1 indicates that this is a map of the row switching operation, the A row and B row exchange. 
If Q = 2 indicates that this is a map of the column switching operation, the A column and B column exchange. 
If Q = 3 means that it is time to ask your boss for the map, asked about the situation in (A, B). 
(Ensure that all given A, B are legal. )

 

Output

For each case, you should output "Case #C:" first, where C indicates the case number and counts from 1.

In each case, for every time the boss asked, output an integer X, if asked point have fruit, then the output is the energy of the fruit, otherwise the output is 0.

 

Sample Input

1
3 3 2
1 1 1
2 2 2
5
3 1 1
1 1 2
2 1 2
3 1 1
3 2 2

 

Sample Output

Case #1:
1
2
1

Hint
No two fruits at the same location.

#include<cstdio>
#include<iostream>
#include<algorithm>
#include<queue>
#include<set>
#include<vector>
#include<map>
#include<math.h>
#include<time.h>
#include<string.h>
using namespace std;
const double pi=acos(-1.0);
#define LL __int64
#define N 100005
const int M=26;
struct node
{
    int x,y;
    bool operator<(const node&a)const
    {                     //结构体内重载运算符
        if(x!=a.x)
            return x<a.x;
        return y<a.y;
    }
}tmp;
/*
bool operator<(const node&a,const node&b)
{
    if(a.x!=b.x)        //结构体外重载运算符
        return a.x<b.x;
    return a.y<b.y;
}*/
map<int,int>u,v;  //把题目所给坐标映射为范围较小的坐标 [0,...]
int cntx,cnty;  //相应坐标值
map<node,int>p;     //把新的坐标和能量C建立映射关系
int main()
{
    int W,n,m,k,T;
    int i,c,x,y,cas=1;
    scanf("%d",&W);
    while(W--){
        scanf("%d%d%d",&n,&m,&k);
        cntx=cnty=0;
        for(i=0;i<k;++i){
            scanf("%d%d%d",&x,&y,&c);
            if(u[x]==0)
                u[x]=cntx++;
            if(v[y]==0)
                v[y]=cnty++;
            tmp.x=u[x];
            tmp.y=v[y];
            p[tmp]=c;
        }
        int q,a,b,t;
        scanf("%d",&T);
        printf("Case #%d:
",cas++);
        while(T--){
            scanf("%d%d%d",&q,&a,&b);
            if(q==1){
                t=u[a];
                u[a]=u[b];
                u[b]=t;
            }
            else if(q==2){
                t=v[a];
                v[a]=v[b];
                v[b]=t;
            }
            else{
                tmp.x=u[a];
                tmp.y=v[b];
                cout<<p[tmp]<<endl;
            }
        }
    }
    return 0;
}