usaco-2.4-maze1-pass

/*
ID: qq104801
LANG: C++
TASK: maze1
*/

#include <iostream>
#include <fstream>
#include <cstring>
#include <vector>
#include <list>
#include <set>
#include <queue>
#include <cstdio>
#include <algorithm>

using namespace std;

int w,h;
int ww,hh;
char g[202][80];
int v[202][80];//visited?

int ddr[4]={-1,0,1,0};
int ddc[4]={0,1,0,-1};
struct node
{
    int row;
    int col;
    int steps;
};

int bfs(int row,int col)
{
    if(row==0||col==0||row==(hh-1)||col==(ww-1))return 0;
    queue<node>q;
    node first,now,temp;
    first.row=row;
    first.col=col;
    first.steps=0;
    q.push(first);
    memset(v,0,sizeof(v));
    while(!q.empty())
    {
        now=q.front();
        q.pop();
        if(v[now.row][now.col])continue;
        v[now.row][now.col]=1;
        for(int i=0;i<4;i++)
        {
            int rr=now.row+ddr[i];
            int cc=now.col+ddc[i];
            if((rr>=0&&cc>=0&&rr<hh&&col<ww&&g[rr][cc]==‘ ‘)&&(rr==0||cc==0||rr==(hh-1)||cc==(ww-1)))
                return now.steps+1;
            if(g[rr][cc]==‘ ‘)
            {
                temp.row=rr+ddr[i];
                temp.col=cc+ddc[i];
                temp.steps=now.steps+2;
                q.push(temp);
            }
        }
    }
    return 0;
}

void test()
{    
    freopen("maze1.in","r",stdin);
    freopen("maze1.out","w",stdout);
    //cin>>w>>h;    
    fscanf(stdin,"%d%d",&w,&h);
    //cout<<w<<" "<<h<<endl;
    ww=2*w+1;
    hh=2*h+1;
    gets(g[0]);
    for(int i=0;i<hh;i++)
    {
        gets(g[i]);
        //cout<<g[i]<<endl;
    }    

    int ans=0;
    for(int i=0;i<hh;i++)
        for(int j=0;j<ww;j++)
        {
            if (g[i][j]==‘ ‘ && (i%2==1) && (j%2==1))
            {
                int tt=bfs(i,j);
                ans=max(ans,tt);                
            }
            else
                continue;
        }
    cout<<(ans-1)/2+1<<endl; 
}

int main () 
{        
    test();        
    return 0;
}

USACO Training
Grader Results     
13 users online
CHN/9 GRC/1 IND/1 KOR/1 MYS/1

USER: cn tom [qq104801]
TASK: maze1
LANG: C++

Compiling...
Compile: OK

Executing...
   Test 1: TEST OK [0.003 secs, 3584 KB]
   Test 2: TEST OK [0.003 secs, 3584 KB]
   Test 3: TEST OK [0.003 secs, 3584 KB]
   Test 4: TEST OK [0.008 secs, 3584 KB]
   Test 5: TEST OK [0.054 secs, 3584 KB]
   Test 6: TEST OK [0.726 secs, 3584 KB]
   Test 7: TEST OK [0.076 secs, 3584 KB]
   Test 8: TEST OK [0.486 secs, 3584 KB]
   Test 9: TEST OK [0.670 secs, 3584 KB]
   Test 10: TEST OK [0.707 secs, 3584 KB]

All tests OK.

YOUR PROGRAM (‘maze1‘) WORKED FIRST TIME! That‘s fantastic -- and a rare thing. Please accept these special automated congratulations.

Here are the test data inputs:

------- test 1 ----
1 1
+-+
   
+-+
------- test 2 ----
9 1
+-+-+-+-+ +-+-+-+-+
|                 |
+-+-+-+-+ +-+-+-+-+
------- test 3 ----
3 3
+-+-+-+
  |   |
+ + + +
|   | |
+-+-+ +
|     |
+-+ +-+
------- test 4 ----
8 7
+ + +-+-+-+-+-+-+
|   | |   |     |
+ + + + + + +-+ +
| | |   | | | | |
+ + + +-+ + + + +
|   | |   | |   |
+-+ + + +-+ +-+-+
|   |   |     | |
+ + +-+ + +-+ + +
|       |       |
+-+-+-+ +-+ +-+-+
|   |     | |   |
+ + + +-+ + + +-+
|     |         |
+-+-+-+-+-+-+-+-+
------- test 5 ----
25 25
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
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|                                                 |
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|                                                 |
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|                                                 |
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|                                                 |
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|                                                 |
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|                                                 |
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|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
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|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                 |
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|                                                 |
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|                                                 |
+ + + + + + + + + + + + + + + + + + + + + + + + + +
|                                                  
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
------- test 6 ----
38 100
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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|       |                   | |   | |   |   |   |       |   | |   | | |   | |
+ +-+-+-+ +-+ +-+-+ + +-+ +-+ + +-+ + +-+-+ + +-+-+ + +-+ +-+ + +-+ + + +-+ +
|           |     | | |       | | | | |       | | | |     |   | | | |     | |
+-+ + +-+-+-+ +-+-+-+-+-+ + +-+ + + + + +-+-+ + + + +-+ +-+-+ + + + + +-+-+ +
|   |   | | | | | | | | | |         | |     |   |     |   | |   |   |     | |
+-+ +-+ + + +-+ + + + + +-+-+ +-+-+-+ + +-+-+-+ + +-+-+-+-+ + +-+-+ + + +-+ +
|   |           |           |             |   |         |   | |   | | |     |
+-+-+ + + +-+-+-+ +-+-+-+-+-+-+ + +-+ +-+ + + + +-+-+-+-+ +-+ + +-+ + +-+-+-+
|   | | |     |           |   | |   |   |   | | |   |   |   |               |
+-+ + +-+ + +-+ +-+-+-+-+-+ +-+-+-+-+-+ +-+-+-+-+ +-+ +-+-+ + + +-+-+ +-+-+-+
|     |   |                   | |   | | |     |       | |     |     |       |
+ + +-+ + + + +-+ + + +-+ +-+-+ + +-+ +-+ + +-+ +-+-+-+ + +-+ +-+-+-+ +-+ +-+
| | |   | | | | | | |   |     |           | |               |     | |   | | |
+-+ +-+-+ +-+ + +-+-+ +-+-+-+ + + +-+-+ + + + +-+ + + + + +-+-+-+-+ +-+-+-+ +
|     | | |     | | |       |   |     | | |     | | | | |   | |     | |     |
+ + +-+ + + +-+ + + +-+-+ +-+-+-+-+ + +-+-+-+-+ + + +-+-+-+-+ + +-+-+ +-+ + +
| | |     | |       |   |         | |         | | | |     |   | | | |     | |
+ +-+-+ +-+ +-+ + +-+-+ +-+ +-+-+-+ +-+-+-+-+-+-+-+ + +-+-+ +-+ + + + +-+-+-+
| |     |     | |     | |         |         | |   | |   | | | |       |     |
+ +-+ +-+-+-+-+ +-+-+-+ +-+-+-+-+ +-+-+-+-+-+ + +-+-+ +-+ + + + +-+ +-+ +-+ +
| |   |                         |     | |   | | | |             | | |     | |
+ +-+-+-+ + +-+ + + +-+-+-+-+ + +-+ +-+ +-+ + + + + +-+-+-+ + + + +-+ +-+-+ +
|   | |   | |   | |         | |   |     |                 | | |   |   | | | |
+ +-+ +-+ +-+-+ +-+-+ + +-+ + + + + +-+-+ +-+-+ +-+ +-+-+-+-+-+-+ + +-+ + +-+
| |       |         | | |   | | | |           |   |   | | |   |     | |     |
+ + + + +-+-+ +-+-+-+-+ +-+ +-+ +-+-+-+-+ +-+ + +-+ +-+ + + + + + + + + +-+ +
| | | | |             |   |   |       | |   | |   |         | | | |       | |
+ + + +-+ +-+ + +-+-+ + + + + +-+-+-+-+ +-+-+ +-+ +-+-+ +-+ +-+-+ +-+ + +-+-+
| | | |   |   |   | | | | | |               | | |   | | | |     |   | | |   |
+-+ + +-+-+ + +-+ + +-+ + + + + + +-+ +-+ +-+-+ +-+-+ +-+ +-+ +-+-+-+-+ + + +
|   | |     | | | | | | | | | | | |     |   | |             |       | |   | |
+-+ + + +-+ +-+ + + + +-+-+-+-+-+ +-+-+ + + + + + + +-+ +-+-+-+-+-+-+ + +-+ +
| | | | |       |       |       |   |   | |     | | |               | |   | |
+ +-+-+-+ + + + + +-+-+-+ +-+ +-+-+-+-+-+ + +-+-+-+ + + +-+ + + +-+ + +-+-+-+
|       | | | | |           |     |   |   |       | | |   | | |   |         |
+ +-+-+ +-+ + + + +-+ +-+-+-+-+-+-+ + +-+-+ + +-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +
| | |       | | |   | | |   |       |   | | |                       |     | |
+-+ + +-+ + + + + + +-+ +-+ + + +-+-+-+-+ +-+-+ + +-+ + + +-+ +-+-+ +-+-+-+-+
|     |   | | | | |   |   |   |       |       | | | | | | |   |   | |       |
+ +-+-+-+-+ + +-+-+ +-+ +-+ + +-+ +-+-+-+ +-+ + +-+ +-+-+-+-+-+ +-+-+ +-+-+-+
| |         |   |         | |   |       | | | |         |       |   |       |
+ +-+ + + + + +-+ + +-+-+ + +-+-+-+-+-+ + + + + +-+-+-+-+ +-+-+-+ +-+ +-+ +-+
| |   | | | |   | | | |       |   | | | |   | |       |     |   |       |   |
+ + +-+ +-+-+ + + + + + +-+ +-+ +-+ + +-+ + +-+-+-+ +-+ +-+-+ +-+ +-+-+-+ +-+
| |   | | |   | | | |   |                 |   |   |             |   |   | | |
+-+ + + + +-+ +-+ + +-+ +-+-+ +-+-+-+-+-+-+-+ + +-+-+-+-+-+-+-+-+ +-+ +-+-+ +
|   | | | |   | | | |   |         |     | | |           | | |   |     |   | |
+-+ +-+-+ +-+ + +-+-+ + + +-+ + + + + +-+ + +-+-+-+-+-+-+ + + +-+ +-+-+ +-+ +
|   |             |   | | |   | |   |   |       |     | |             |   | |
+-+-+ +-+-+-+ +-+-+ + + +-+-+ + + +-+ +-+ +-+-+-+ +-+-+ + + +-+ +-+-+-+ +-+ +
|       | | |   |   | | |     | |   |   |   | |         | | | |   | |     | |
+ + +-+-+ + + + +-+ +-+ + + +-+ + +-+-+-+ +-+ + + +-+-+-+ +-+ +-+-+ + + +-+ +
| |   | |     |   |   | | |   | |               |   | | |   |   | |   |     |
+ + + + + + +-+-+ + +-+-+ + +-+ + +-+-+-+-+ +-+-+-+-+ + + +-+ + + + + +-+-+-+
| | | |   |     | |   |   | |   |         |   |   |           |     | |     |
+ + +-+-+ +-+-+-+ +-+-+-+-+-+-+ + +-+ + + +-+-+ +-+ +-+-+-+-+ +-+-+ +-+ +-+-+
| | |           |   | |         | |   | |         |       | |   | |   |   | |
+-+-+-+-+ + +-+-+-+-+ + +-+ + +-+-+ + +-+ + + +-+-+ + +-+ + +-+ + +-+-+ +-+ +
|         |       |     |   |     | |   | | | |     |   |     |       |     |
+-+-+-+ +-+ +-+ +-+-+-+ + +-+ + +-+ + +-+-+-+ +-+ + +-+-+-+-+-+-+ + +-+-+ +-+
| |   |   | |       |   | | | |   | |       | |   |       |   |   |       | |
+ +-+ + + +-+-+ +-+-+-+-+ + + +-+ +-+ +-+ +-+-+ +-+-+ +-+-+ + +-+-+ +-+ + + +
|       | |         |     |     |   |   |       |   |     | | | |     | |   |
+-+ + + +-+-+ + + +-+-+-+ + +-+-+ +-+ +-+-+ +-+ + + +-+-+-+ +-+ +-+-+-+ + + +
| | | |     | | |   |     |   |   |   |   | |     | |     | | |       | | | |
+ +-+ + +-+-+-+ + + +-+ + +-+ +-+-+-+ +-+ +-+-+-+-+-+ +-+-+ + + +-+ + +-+-+ +
|     |       | | |   | |   |   |         |       | | | | |       | | |   | |
+-+ + +-+ + + +-+ + +-+ + +-+ +-+ +-+ +-+ + +-+ +-+ + + + + +-+-+-+-+-+-+ + +
|   |   | | | |   | |   |   |   | |   |       |                   | | | | | |
+ + + +-+-+-+-+-+ +-+-+ + + +-+ + +-+ + +-+ + +-+ + +-+-+ + +-+-+-+ + + + + +
| | |         |   |   | | |   | | | | | |   |   | |     | |             |   |
+ + + +-+ + + +-+-+-+ + + +-+-+-+ + + + +-+ +-+ + +-+-+ +-+ + +-+-+-+-+ + +-+
| | | |   | |   |   |   | | |     |   | |     | |     | |   |     | | | |   |
+ +-+ + + +-+-+-+ + + +-+ + + +-+ +-+ +-+ + + + +-+ +-+ +-+ +-+-+-+ + +-+ +-+
|   | | | |     | |   |   |     |   | |   | | | |   | | | |     |     | |   |
+ + + +-+-+ + +-+-+ + + + + + +-+ +-+-+ + +-+-+ +-+ + +-+ + + +-+ +-+-+ + +-+
| | |   |   |     | | | | | |   |   |   |     | |     |   | |   | |     | | |
+ + +-+-+-+-+ +-+ + + +-+-+ + +-+ +-+-+ + +-+-+-+-+ + + + +-+-+-+ + + + +-+ +
| |     |     |     |     | | |   | |   |     |     |   |           | | | | |
+ + +-+-+-+ + + +-+ +-+ + +-+ +-+ + +-+ +-+ + +-+ + +-+ +-+ +-+-+-+ +-+-+ + +
| |     |   | | |   |   | |   |       |   | | |   |   |   |   |   |         |
+ + +-+ +-+ + + + + + + + + + + + + +-+-+-+-+ + + + +-+ +-+-+ + + + +-+-+ +-+
| |   | |   | | | | | | | | | | | |       |   | | | |     |     | |     | | |
+ +-+-+ +-+ +-+ +-+ + + +-+ +-+ +-+ + + +-+ +-+-+-+ +-+ +-+-+-+-+ + + + +-+ +
|     | | |   |   | | | |   |     | | |   | |         |         | | | |     |
+ + +-+-+ + +-+-+ + + +-+-+-+-+ + + +-+ +-+ + +-+ +-+ + + +-+-+ +-+-+ +-+-+-+
| | |     |     | | |   |       | | | | | | |   |   | | | |   | | |         |
+ + +-+-+ + +-+ + +-+ +-+-+ +-+ +-+-+ +-+ +-+ +-+-+ + +-+ + +-+-+ +-+ +-+-+ +
| | |         | | |   |   |   |             |     | | |     |       | |   | |
+ +-+-+ + +-+ +-+-+-+ +-+ +-+ + + + + + + + + +-+-+ + + + + + +-+-+-+ + +-+ +
|     | | |     |   | |       | | | | | | | |   |   | | | |   |     |     | |
+ + + + +-+-+ +-+-+ + +-+ + + + +-+ + +-+-+ +-+ +-+-+-+-+ + + + +-+ + + + +-+
| | | |   |     |     | | | | |   | |     | |         |   | |     | | | |   |
+-+ + + + + +-+-+-+-+ + + +-+ +-+-+ + +-+ +-+ +-+ + +-+-+ + +-+-+-+ +-+ + + +
|   | | | |     |   | |   |       | |   |   |   | |   | | | |   | |   | | | |
+-+ +-+ + +-+-+ +-+ + + + + + +-+ +-+ +-+-+-+-+ +-+ +-+ +-+ + +-+ +-+-+-+ + +
|     | | |       |   | | | | |   |           | |     |   | |         | | | |
+ + +-+-+ + +-+ + +-+ + +-+ +-+ +-+ + + + + + +-+ +-+ + + + + + +-+-+-+ + +-+
| |     | | |   | |   | |   |     | | | | | |   | |   | |     |   | |       |
+ +-+ +-+ +-+-+ +-+ +-+ +-+ +-+-+ +-+ +-+ + + +-+-+-+-+-+ + + +-+-+ +-+-+-+ +
|   | |   |       |   | |     |   |     | | |     |       | |   |         | |
+-+ +-+ + +-+ +-+-+-+ + + + +-+ + + + +-+ + +-+-+-+-+-+ +-+-+ + + +-+-+-+-+-+
|   |   |   |   |     | | |   | | | |   | |       |     |     |             |
+-+-+ + +-+ + +-+-+-+ +-+-+ +-+ + +-+ +-+-+-+ +-+ + +-+ + +-+ +-+ + +-+-+-+-+
|     | |   |     |     | |   | | | |   |       | | |   | |     | |       | |
+-+-+-+ +-+ + +-+-+-+-+ + + +-+-+ + + + +-+ + + +-+-+ + +-+-+ + +-+-+ +-+-+ +
|         | | |   |     |       | |   | |   | | |     |     | | | | | |     |
+ +-+ + +-+ + +-+ +-+-+-+-+ + +-+ + + + +-+-+ +-+ +-+ +-+ +-+ +-+ + +-+ +-+ +
| |   |   | | |         | | |   | | | |     | | |   |   |   |           |   |
+ + +-+ + +-+-+-+ + + + + + +-+ +-+-+-+-+-+ +-+ + + + + + + + +-+ +-+ + +-+-+
| | |   |   |     | | |       | | |             | | | | | | |   |   | |     |
+ + + + +-+-+-+-+ + +-+ +-+-+ +-+ +-+-+ +-+ +-+-+ + + +-+ +-+-+ + +-+-+ +-+-+
| | | | | |   |   | | |     |     |       |   |   | | |     |   |   | |     |
+ + + + + + + +-+ +-+ + +-+-+ +-+-+ +-+-+-+ +-+-+ + + +-+ +-+-+-+ +-+ +-+ + +
| | | |     | |   |         | |         |     |   | | |   | | |         | | |
+ +-+ + + + + +-+-+ +-+ + + +-+-+-+ +-+ +-+ +-+-+-+-+-+-+ + + + + + + +-+ +-+
|   | | | | | | |   |   | |       |   | |     | |         |   | | | |   |   |
+-+ +-+-+ +-+ + +-+-+-+-+ +-+-+-+ + +-+-+-+-+ + +-+ +-+-+ + +-+ +-+-+-+ +-+-+
|   |     | | |   | | | |   | |   |   |         |   |         |       |   | |
+-+-+ +-+ + + + +-+ + + + +-+ + + + +-+-+ +-+ + +-+-+ +-+ +-+ + + +-+-+-+ + +
|     |     | | |         |   | | | |     |   |   |   |   | | | | | |   |   |
+ +-+-+-+ +-+-+ +-+-+ + + + +-+-+ +-+-+-+ +-+ + +-+-+-+-+ + +-+-+-+ + +-+ +-+
|   |       |     | | | |   |   |   | |   |   |   |           | |   | | | | |
+-+-+ + +-+ +-+ + + +-+ + + + + +-+-+ +-+ +-+ +-+ +-+-+-+ + + + +-+ + + +-+ +
|     | |   |   |       | |   |       |     | |   |       | |               |
+ +-+ +-+-+ +-+-+-+ +-+ +-+-+-+ + + +-+-+ + +-+-+-+ + +-+ +-+-+-+-+ +-+ +-+-+
| | | |         |   |     |   | | |     | | |     | | |   | |   | |   |     |
+-+ +-+ + + + +-+-+-+-+ + + +-+ + + +-+ + +-+-+ +-+ +-+-+ + +-+ + +-+-+-+-+-+
|       | | |   | | |   |     | | | |   | |     |   |     |   |     |       |
+ + + + +-+-+-+-+ + +-+ +-+ +-+-+ +-+ +-+-+-+-+ +-+-+-+-+ + +-+ +-+-+ +-+-+ +
| | | |     |           |     |     | |   |                               | |
+ + +-+ +-+-+-+-+-+ + +-+ + +-+-+-+ +-+ +-+-+-+ +-+-+ + + + + +-+ +-+-+-+-+ +
| | |   |           |   | |     |         |     |     | | | |   |       |   |
+ +-+-+ +-+ +-+-+ + +-+ + + +-+-+-+-+ +-+-+-+-+-+-+ + +-+ + + +-+-+-+-+ +-+ +
| | |   |   |     |   | | |         |     |         | |   | |     |   |   | |
+-+ + +-+-+ + +-+ +-+-+-+ + + + + +-+ +-+-+-+-+-+ +-+ +-+-+-+ +-+-+ +-+ +-+-+
|     |     | |       |   | | | |   | | |         |   |   | |         |     |
+-+-+ +-+ + +-+ + +-+ + +-+ +-+ + +-+-+ +-+ + +-+ +-+-+ +-+ + +-+ + +-+-+-+-+
|     |   | |   |   | |   | |   | | | |   | |   |   |           | | | |     |
+-+-+-+-+ +-+-+-+ +-+-+ +-+-+-+ + + + + +-+-+ +-+ +-+ +-+ + +-+ + +-+ + + + +
|         |           |   |     |     | |       |   |   | | |   |       | | |
+ +-+ +-+ + +-+ +-+-+-+-+ +-+-+ + + +-+ +-+-+ +-+ + + + +-+-+-+ +-+ + +-+-+-+
|   | |   | |         | | |     | |         |   | | | |   | |     | |     | |
+ +-+-+-+-+ +-+ + +-+ + +-+ + + +-+ + +-+-+-+ +-+ + + +-+-+ + +-+ + + +-+ + +
| |         |   | |     |   | | |   |     |     | | | |         | | |   |   |
+-+ + + +-+ +-+ +-+-+ +-+-+-+ +-+-+-+ + + +-+ + +-+-+ +-+-+ + +-+ +-+-+ +-+-+
|   | | |   |     | |   |         |   | | |   | | |   |     | |     |       |
+-+ +-+ +-+-+ + +-+ + + +-+ + + +-+ + + +-+-+ + + +-+ +-+-+ +-+ +-+-+ + + + +
|   |   |     | |     | |   | | |   | |   |   | |     |       |     | | | | |
+-+ +-+ +-+-+-+ +-+ + + + +-+ + + +-+ + +-+-+-+ + + +-+-+-+ +-+ + + + + +-+-+
|   |   |   | | |   | | |   | | |   | |   |     | | |       |   | | | |     |
+ +-+-+ +-+ + + +-+-+-+-+-+ + +-+-+ +-+ +-+-+-+ + +-+ +-+ + +-+ + +-+ + +-+ +
| | |   |             |     |   |     |   |   | | |     | | | | | |   |   | |
+ + +-+-+-+ +-+ +-+-+-+-+-+ +-+-+ + + + +-+-+ +-+ + + +-+ + + +-+ +-+-+ +-+ +
| |   |       | |     | |   |     | | | |       | | | |   |     |     | |   |
+-+-+ +-+ + +-+ + +-+-+ + +-+-+-+ + + +-+-+-+ +-+ +-+ + +-+ + + + +-+-+-+-+ +
|       | |   |     | |       |   | | |             | |   | | | |   |     | |
+ +-+-+ +-+-+-+ + + + +-+ +-+ +-+ +-+ +-+ + + + +-+ + +-+ +-+-+ +-+ + +-+-+ +
| |             | | |       | |     | |   | | |   | | | |   |     |   |     |
+-+ +-+ + + +-+ +-+-+ +-+ +-+-+ +-+-+-+-+ +-+ +-+-+ + + +-+-+-+ +-+ + + +-+ +
|   |   | | | |   |     |     |   | |     |   |     |   |         | | | |   |
+-+-+-+-+ +-+ + + +-+ +-+ + + + +-+ + + + +-+-+-+ + + + +-+-+ + + + +-+ + + +
|     | | |     | |   |   | | |   |   | | |       | | |     | | | | |   | | |
+ + + + +-+ +-+ +-+-+ + + + +-+-+ +-+ + +-+-+-+-+ + +-+ +-+-+ + + + +-+ + +-+
| | |       | |   |   | | |   |   |   | | |       |   | |     | | | |   |   |
+ + + +-+-+ + + +-+ + + +-+ +-+ +-+ +-+-+ + +-+-+ +-+-+ +-+ +-+-+ + + +-+ +-+
| | | |     |     | | | | |   | |   | |       |       |   | |     | | |     |
+-+-+ +-+-+ + + +-+-+ +-+ + +-+ +-+-+ +-+-+-+-+ + + + +-+-+-+ +-+ + +-+-+ +-+
| |   |     | | |       |   |     |             | | |     | | | | | |     | |
+ +-+ +-+-+ + +-+ + + +-+ +-+-+-+-+ + +-+ + +-+ + +-+ +-+-+ +-+ + + + + + + +
|   | | |   |   | | | |         | | | |   | |   | |             | | | | |   |
+-+ +-+ +-+-+ +-+-+ +-+ + + + +-+ + +-+-+-+ +-+ +-+-+-+ +-+ +-+ +-+-+ + + +-+
|       |         |   | | | | | |   |   |   | | |         | |       | | |   |
+-+ + +-+-+-+ +-+-+ +-+-+-+-+-+ +-+ +-+ +-+ + +-+ + +-+ + +-+-+-+-+-+ + +-+ +
|   |           |           |   |   |           | | |   |         |   | |   |
+-+-+-+ +-+ + +-+-+ + + +-+-+-+ +-+-+-+ +-+ + +-+ +-+-+-+ + +-+ + + + +-+ + +
|       |   |     | | | |               | | | |       |   |   | | | | | | | |
+ +-+-+ +-+-+ + +-+ +-+-+-+ + + + + +-+ + + +-+ +-+-+ + +-+-+ +-+-+ +-+ +-+-+
| | |       | |   |       | | | | | |   |   | |   | | |   |       |   | |   |
+-+ + + + + +-+ +-+ + +-+ + + + +-+ +-+ + + + +-+ + +-+ +-+ + + + +-+-+ + +-+
| |   | | |   |   | | |   | | |   | |   | |     |     |   | | | |           |
+ +-+ + +-+-+ + +-+ + +-+-+ +-+-+-+-+-+-+ +-+-+-+ + + + + +-+ + + +-+ + + +-+
|     |     | |   | | |       |           | |     | | | |   | | |   | | |   |
+-+ +-+ +-+ +-+-+ +-+ + + +-+-+-+-+ +-+ +-+ + + +-+ +-+ + + +-+-+ + + + +-+-+
|   |     |   |   | | | |   |         |     | |   | |   | |   |   | | |     |
+ +-+ +-+-+ +-+-+ + + +-+-+ + + + + +-+ + + +-+ + +-+ + + + + + +-+ + + + +-+
| |     |     |     |   |   | | | | |   | |   | | |   | | | | | |   | | |   |
+-+-+ + +-+ +-+ + +-+-+-+ + + +-+ +-+ +-+ + + + +-+ +-+ + + +-+-+ +-+-+ + +-+
|     | |     | | | |   | | | |   |   |   | | | |   |   | |   |   | |   |   |
+ +-+-+ +-+ + +-+ + + + + +-+-+-+ +-+-+ +-+-+-+-+-+ +-+-+ +-+-+ + + +-+ + + +
| |     |   | |     | | | |     | |           |       |     | | |     | | | |
+ +-+ +-+-+ +-+-+ +-+ + +-+ +-+ + + +-+-+-+ +-+-+-+ +-+ + +-+ + +-+ + +-+ + +
| |       |   |       | | | |   | | |           |   |   |     |   | |   | | |
+-+ + + +-+ +-+-+ +-+-+ + + +-+ +-+-+ +-+ +-+ +-+-+-+ +-+ + + +-+-+-+-+-+-+ +
|   | | |   |         |   | |         |     |     |   |   | |   | |       | |
+-+ +-+ +-+ +-+ + + +-+ +-+-+-+-+ + +-+ + + + + +-+-+ +-+ + + +-+ +-+ +-+ +-+
|     |   | |   | |   |     |     |   | | | | |   |   |   | |           | | |
+ + + + +-+-+ + +-+ +-+-+-+-+ +-+ +-+-+-+-+ + + + + + + + + + +-+-+-+-+-+-+ +
  | | |     | | |         |   |           | | | | | | | | | |               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
------- test 10 ----
38 100
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                           |         | | |       |             |       |   |
+ + + +-+-+-+-+ + +-+-+-+-+-+ + +-+-+ + + + +-+-+-+-+ +-+ + + +-+ +-+ +-+ + +
| | |     |     |                 |       |     | |       | | |   | |       |
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|     |       | |       |   | |   |                 |   |   |   | |     | | |
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