POJ2632,Crashing Robots,模拟法，繁

Crashing Robots

Description

In a modernized warehouse, robots are used to fetch the goods. Careful planning is needed to ensure that the robots reach their destinations without crashing into each other. Of course, all warehouses are rectangular, and all robots occupy a circular floor space with a diameter of 1 meter. Assume there are N robots, numbered from 1 through N. You will get to know the position and orientation of each robot, and all the instructions, which are carefully (and mindlessly) followed by the robots. Instructions are processed in the order they come. No two robots move simultaneously; a robot always completes its move before the next one starts moving. 
A robot crashes with a wall if it attempts to move outside the area of the warehouse, and two robots crash with each other if they ever try to occupy the same spot.

Input

The first line of input is K, the number of test cases. Each test case starts with one line consisting of two integers, 1 <= A, B <= 100, giving the size of the warehouse in meters. A is the length in the EW-direction, and B in the NS-direction. 
The second line contains two integers, 1 <= N, M <= 100, denoting the numbers of robots and instructions respectively. 
Then follow N lines with two integers, 1 <= Xi <= A, 1 <= Yi <= B and one letter (N, S, E or W), giving the starting position and direction of each robot, in order from 1 through N. No two robots start at the same position. 
 
Figure 1: The starting positions of the robots in the sample warehouse
Finally there are M lines, giving the instructions in sequential order. 
An instruction has the following format: 
< robot #> < action> < repeat> 
Where is one of 

• L: turn left 90 degrees, 
  
• R: turn right 90 degrees, or 
  
• F: move forward one meter,

and 1 <= < repeat> <= 100 is the number of times the robot should perform this single move.

Output

Output one line for each test case: 

• Robot i crashes into the wall, if robot i crashes into a wall. (A robot crashes into a wall if Xi = 0, Xi = A + 1, Yi = 0 or Yi = B + 1.) 
  
• Robot i crashes into robot j, if robots i and j crash, and i is the moving robot. 
  
• OK, if no crashing occurs.

Only the first crash is to be reported.

Sample Input

4
5 4
2 2
1 1 E
5 4 W
1 F 7
2 F 7
5 4
2 4
1 1 E
5 4 W
1 F 3
2 F 1
1 L 1
1 F 3
5 4
2 2
1 1 E
5 4 W
1 L 96
1 F 2
5 4
2 3
1 1 E
5 4 W
1 F 4
1 L 1
1 F 20

Sample Output

Robot 1 crashes into the wall
Robot 1 crashes into robot 2
OK
Robot 1 crashes into robot 2

分析:

大模拟，每次输入存入x[n],y[n],dir[n]数组中，方向则按北西南东的顺序分别为0,1,2,3。并且用一个数组area[a][b]存储每个空格的情况，如有机器人就存机器人的编号，否则置为0。vis[a][b]存每个位置是否被占用，其实不必，但这题是夜里一两点写的，没精力优化。这样的目的是以后移动的时候不必每个机器人挨个比较，直接遍历要走的格子的情况就好了。

向左转向右转采用+3,+1对4取余的方式，注意只能是正数对4取余。并且每次移动完后要更改area[][]跟vis[][]的值。注意如果有一个指令的结果是已经撞墙或者撞上机器人了，这个case不能直接结束，仍要输入，不过可以不用处理，也算一种优化吧。代码写的很挫，不过很有收获。

code:

#include<iostream>
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
using namespace std;
int x[100+5];
int y[100+5];
int dir[100+5];
int a,b,n,m;
int area[105][105];
int vis[105][105];
int crash(int i,int step)
{
    int j;
    switch(dir[i])
    {
        case 0:
        for(j=1;j<=step;j++)
            if(vis[x[i]][y[i]+j]) return area[x[i]][y[i]+j]; //BOT
        if(y[i]+step>b) return -1; //wall
        area[x[i]][y[i]]=0; vis[x[i]][y[i]]=0;
        y[i]+=step;
        area[x[i]][y[i]]=i; vis[x[i]][y[i]]=1;
        break;
        case 1:
        for(j=1;j<=step;j++)
            if(vis[x[i]-j][y[i]]) return area[x[i]-j][y[i]]; //BOT
        if(x[i]-step<=0) return -1; //wall
        area[x[i]][y[i]]=0; vis[x[i]][y[i]]=0;
        x[i]-=step;
        area[x[i]][y[i]]=i; vis[x[i]][y[i]]=1;
        break;
        case 2:
        for(j=1;j<=step;j++)
            if(vis[x[i]][y[i]-j]) return area[x[i]][y[i]-j]; //BOT
        if(y[i]-step<=0) return -1; //wall
        area[x[i]][y[i]]=0; vis[x[i]][y[i]]=0;
        y[i]-=step;
        area[x[i]][y[i]]=i; vis[x[i]][y[i]]=1;
        break;
        case 3:
        for(j=1;j<=step;j++)
            if(vis[x[i]+j][y[i]]) return area[x[i]+j][y[i]]; //BOT
        if(x[i]+step>a) return -1; //wall
        area[x[i]][y[i]]=0; vis[x[i]][y[i]]=0;
        x[i]+=step;
        area[x[i]][y[i]]=i; vis[x[i]][y[i]]=1;
        break;
    }
    return 0;
}
int move(int i,char ch,int r)
{
    int j;
    switch(ch)
    {
        case 'L':
            for(j=0;j<r;j++) dir[i]=(dir[i]+1)%4;
            break;
        case 'R':
            for(j=0;j<r;j++) dir[i]=(dir[i]+3)%4;
            break;
        case 'F':
            return crash(i,r);
    }
    return 0;
}
int main()
{
    int k,i,j,r,res=0,flag;
    char ch;
    scanf("%d",&k);
    while(k--)
    {
        res=0;
        flag=0;
        memset(area,0,sizeof(area));
        memset(vis,0,sizeof(vis));
        scanf("%d %d",&a,&b);
        scanf("%d %d",&n,&m);
        for(i=1;i<=n;i++)
        {
            scanf("%d %d %c",&x[i],&y[i],&ch);
            area[x[i]][y[i]]=i;
            vis[x[i]][y[i]]=1;
            switch(ch)
            {
                case 'N': dir[i]=0; break;
                case 'W': dir[i]=1; break;
                case 'S': dir[i]=2; break;
                case 'E': dir[i]=3; break;
            }
        }
        for(i=0;i<m;i++)
        {
            scanf("%d %c %d",&j,&ch,&r);
            if(res!=0&&flag) continue;
            res=move(j,ch,r);
            if(res==0) continue;
            else if(res==-1)
            {
                printf("Robot %d crashes into the wall\n",j);
                flag=1;
            }
            else
            {
                printf("Robot %d crashes into robot %d\n",j,res);
                flag=1;
            }
        }
        if(res==0) printf("OK\n");
    }
    return 0;
}

给出一组测试数据：

input:
32
1 1
1 1
1 1 W
1 F 1
3 3
1 9
2 2 W
1 F 1
1 L 1
1 F 1
1 L 1
1 F 2
1 L 5
1 F 2
1 R 3
1 F 2
5 5
9 1
3 1 W
3 2 N
3 4 S
3 5 E
1 3 S
2 3 N
4 3 E
5 4 W
3 3 W
9 F 4
5 5
9 1
3 1 W
3 2 N
3 4 S
3 5 E
1 3 S
2 3 N
4 3 E
5 4 W
3 3 S
9 F 4
5 5
9 1
3 1 W
3 2 N
3 4 S
3 5 E
1 3 S
2 3 N
4 3 E
5 4 W
3 3 N
9 F 4
5 5
9 1
3 1 W
3 2 N
3 4 S
3 5 E
1 3 S
2 3 N
4 3 E
5 4 W
3 3 E
9 F 4
5 5
2 3
3 3 E
4 5 N
2 L 3
2 R 8
2 F 3
46 46
9 100
39 25 E
15 14 N
15 22 N
27 25 S
25 40 S
19 36 W
27 6 W
22 45 W
28 15 W
5 F 13
3 R 2
8 F 9
5 L 4
6 F 7
3 F 12
9 F 5
6 L 2
3 L 2
3 F 13
2 L 2
4 F 12
9 L 2
9 F 2
5 F 1
3 F 3
9 L 2
3 L 5
3 L 21
3 F 6
4 R 2
4 F 1
6 F 13
9 R 2
9 R 29
6 L 2
2 L 9
2 F 13
4 L 2
1 F 14
5 F 1
6 F 1
8 L 2
6 F 1
3 R 13
4 F 4
3 F 6
6 F 4
2 L 2
5 F 1
9 R 14
3 R 2
6 R 2
9 L 12
3 F 3
7 F 1
9 L 2
6 F 5
6 F 12
4 F 5
3 R 2
6 R 29
6 F 10
9 F 1
2 F 5
9 F 10
4 F 4
4 R 31
9 L 8
3 L 2
4 R 27
3 F 4
1 F 1
1 R 3
5 L 10
6 R 17
7 F 15
8 F 8
9 F 7
6 F 11
8 L 3
2 F 3
1 L 2
3 L 3
4 R 2
7 L 11
1 L 30
8 L 13
9 F 11
2 L 2
8 R 2
3 R 2
3 R 2
8 L 2
4 L 2
2 F 8
8 F 14
6 R 6
9 F 13
2 F 11
5 F 7
1 F 14
1 R 7
9 L 28
3 L 4
6 F 14
7 F 5
2 R 29
5 F 1
8 L 4
16 27
6 100
12 13 W
9 3 W
10 3 E
6 7 W
7 11 W
3 1 W
5 F 4
5 L 14
6 F 1
6 F 1
3 L 19
5 F 3
4 L 29
4 R 3
4 L 2
1 L 2
5 R 2
4 F 6
4 F 4
6 L 9
5 L 2
3 R 2
5 F 1
5 F 1
5 F 3
1 L 2
3 R 2
6 R 2
1 L 26
3 R 2
5 L 2
5 L 11
5 F 6
3 R 2
2 F 1
3 F 3
5 L 10
3 F 1
2 F 3
4 R 2
6 F 6
2 F 1
6 F 1
2 R 2
1 L 2
1 R 2
4 R 5
4 R 2
4 F 4
6 L 12
3 L 2
3 F 1
4 L 15
4 L 4
3 F 4
6 F 4
2 R 2
4 F 4
3 L 2
5 L 2
2 R 2
6 F 1
3 F 1
2 F 2
6 R 2
5 R 23
5 L 14
3 R 1
6 L 2
3 F 6
6 R 6
4 F 1
6 L 2
2 F 6
1 L 24
5 F 3
1 R 21
4 L 2
1 R 2
5 F 6
2 R 20
5 L 9
6 F 2
3 F 2
5 F 2
1 F 1
5 L 13
4 R 2
1 F 5
6 R 2
2 F 1
2 R 2
6 L 23
3 F 1
2 F 3
4 R 2
4 L 2
5 F 5
1 F 3
4 F 1
2 F 5
3 R 19
5 L 21
6 F 2
4 L 2
1 L 2
15 48
35 1
10 32 W
7 40 E
14 45 E
11 30 S
2 38 W
14 2 W
5 10 W
11 13 W
7 44 N
8 13 S
1 5 N
13 47 E
10 34 S
1 35 E
2 9 W
1 9 W
3 43 W
9 14 N
5 32 E
6 1 W
2 14 S
5 33 W
9 36 S
13 22 E
11 19 S
4 1 W
1 38 N
14 35 W
4 7 W
11 21 N
5 17 W
3 21 N
2 25 E
6 5 N
13 10 E
12 F 5
40 13
5 100
31 8 E
25 12 N
35 1 S
34 2 S
19 5 E
5 R 2
2 F 8
3 L 2
1 F 7
4 F 3
1 F 5
2 F 7
3 F 4
1 F 2
1 R 2
2 L 2
2 F 4
4 L 19
4 F 3
2 R 2
5 L 23
5 R 8
1 R 28
3 F 5
4 R 18
1 F 3
2 F 6
2 F 1
2 R 2
4 R 2
4 R 31
4 L 11
3 R 2
5 F 3
1 F 1
1 R 2
5 F 4
4 F 4
2 L 28
5 L 4
1 F 4
4 F 1
3 F 6
2 R 2
2 F 6
1 F 5
5 F 8
5 R 2
3 L 2
1 F 1
1 F 1
4 F 1
2 F 1
1 R 21
1 L 2
5 F 5
2 F 8
4 F 1
2 L 6
2 L 2
2 L 2
5 R 8
2 F 7
4 L 2
3 F 6
5 F 1
3 R 2
3 F 8
1 F 1
5 R 15
3 L 17
3 F 4
3 R 4
5 L 2
2 F 8
5 L 1
2 L 2
1 F 4
1 L 31
3 F 3
3 F 1
1 F 4
1 F 3
4 L 2
3 F 1
3 L 2
4 F 5
4 F 3
2 R 2
3 F 2
5 R 2
1 R 19
5 F 2
2 L 2
2 F 7
1 L 21
3 F 1
5 F 7
2 R 3
2 F 4
1 F 7
2 R 5
2 F 4
5 L 25
2 F 2
49 7
15 11
43 5 N
23 2 S
30 1 N
24 5 E
13 6 E
29 4 S
5 3 S
15 3 N
28 5 E
29 6 E
10 3 W
7 6 N
6 5 N
13 2 S
10 5 W
5 F 4
3 R 22
11 R 13
5 L 2
6 F 1
9 F 1
3 F 8
15 F 2
3 F 1
11 L 2
6 R 2
4 41
2 100
1 37 S
2 10 W
1 R 2
2 F 3
1 R 2
1 F 2
2 R 2
1 F 3
2 R 2
1 F 1
2 L 23
2 L 13
2 R 30
1 F 1
1 L 2
2 F 4
1 R 28
2 R 18
1 F 1
1 F 6
2 F 6
2 F 6
1 L 2
1 F 3
1 R 2
2 F 6
2 L 26
2 L 2
1 R 19
2 L 2
2 F 1
2 R 30
2 F 1
2 F 1
2 F 1
2 L 19
2 R 2
2 F 2
1 F 3
1 L 21
2 F 6
1 L 15
2 R 30
1 F 1
1 L 26
1 L 2
2 F 6
2 L 1
1 F 7
2 L 17
1 F 1
1 L 21
1 F 6
2 L 26
1 F 2
1 F 7
2 L 2
2 R 20
2 R 27
2 F 3
1 F 6
1 L 6
2 R 9
1 F 6
1 L 2
1 F 1
2 F 4
2 R 2
2 L 2
2 R 2
1 F 3
2 R 2
1 R 2
1 R 5
1 F 4
2 L 14
1 F 1
2 R 24
1 R 2
2 L 13
2 F 2
2 F 4
1 F 4
1 R 9
2 F 4
2 L 29
2 F 5
1 F 3
2 F 4
1 R 7
2 R 2
1 L 2
1 R 25
1 R 20
2 L 25
1 R 28
1 R 2
1 F 6
1 L 2
1 F 4
1 R 20
2 L 15
3 20
2 1
2 14 N
2 13 W
2 F 2
42 27
19 1
19 25 E
24 20 S
14 3 E
41 3 N
3 18 W
30 2 E
8 24 N
35 13 E
20 7 S
32 23 E
29 1 W
1 14 E
39 7 E
1 12 E
10 4 E
19 18 W
28 6 E
29 21 W
7 13 W
12 F 1
29 44
52 10
28 29 E
25 31 S
22 31 N
5 2 E
16 28 E
19 2 W
5 4 S
22 38 S
6 37 E
2 25 N
17 19 N
4 6 S
8 25 N
13 22 N
4 11 N
5 39 S
18 34 S
17 1 W
11 17 N
14 34 W
13 31 W
26 1 S
12 38 E
14 21 W
2 2 S
23 20 S
24 14 S
5 29 E
2 10 W
26 24 W
24 34 N
17 38 E
17 29 N
20 26 S
10 7 N
19 8 N
27 7 W
5 5 W
4 39 S
27 32 S
25 12 S
28 25 S
18 31 W
15 41 S
20 20 E
6 22 W
9 12 W
24 2 E
19 32 N
23 34 S
17 11 W
6 4 S
46 L 2
43 F 4
47 F 2
33 F 5
36 L 11
3 L 2
45 L 2
40 F 5
33 F 10
45 F 6
27 37
46 100
20 22 S
26 3 N
22 28 S
17 16 W
15 18 N
11 17 S
7 15 W
17 2 E
7 16 W
13 14 S
11 27 N
21 23 S
11 12 E
22 11 S
19 11 E
22 1 S
8 16 S
21 18 S
2 20 W
16 6 S
5 22 N
3 15 S
2 29 W
14 23 S
19 9 W
12 30 N
3 28 N
23 33 S
25 24 N
6 4 S
12 6 N
1 14 N
24 1 E
8 21 W
23 22 W
10 21 N
17 31 S
7 11 S
13 7 E
6 27 S
3 6 W
12 35 E
23 16 E
5 29 W
20 23 S
1 22 E
3 L 2
25 R 25
33 R 5
24 F 9
25 F 2
15 F 2
46 L 4
46 L 13
45 L 14
26 F 4
4 F 5
42 F 1
39 R 3
24 L 2
6 F 2
46 F 5
12 F 8
6 F 3
9 F 5
36 F 5
38 R 2
35 L 30
38 F 7
2 R 6
46 L 3
21 R 2
44 F 1
36 F 2
23 F 1
40 R 30
11 F 3
20 L 6
10 F 6
10 R 20
11 F 1
35 L 29
27 F 8
3 L 24
14 L 6
32 F 10
40 F 8
26 R 3
12 F 5
10 L 19
10 L 2
36 R 2
27 F 1
21 L 2
39 F 1
17 F 7
46 L 25
2 L 13
5 R 2
2 R 18
22 F 9
45 L 18
16 F 6
5 F 9
34 F 1
5 L 2
21 F 6
36 L 26
41 F 6
2 F 1
5 F 8
38 F 5
35 F 9
15 R 2
31 F 2
37 L 2
44 F 2
46 F 1
40 F 1
42 F 4
12 F 9
22 F 2
7 R 2
9 R 24
17 F 6
15 R 2
34 F 5
46 F 6
29 R 2
9 F 10
34 R 11
15 L 10
16 F 7
8 R 22
1 F 8
38 F 3
41 F 5
22 L 7
45 R 2
2 F 5
20 F 3
24 L 1
32 L 2
43 F 6
38 F 2
32 F 6
46 5
2 8
33 1 E
12 1 W
1 F 2
2 L 21
1 R 2
2 F 1
2 F 2
2 L 2
1 L 2
1 R 2
33 3
3 70
21 2 E
26 2 N
16 2 N
3 F 4
2 L 16
3 L 15
2 R 2
1 L 2
1 L 16
1 R 19
1 R 2
1 F 3
1 F 2
1 R 2
3 F 4
1 F 1
1 R 2
3 F 1
1 F 2
2 R 2
2 F 2
2 F 2
1 L 2
3 F 1
2 F 2
3 L 30
3 L 2
1 L 24
1 R 12
3 L 31
3 L 2
3 F 5
1 F 2
3 L 2
3 F 1
2 L 20
1 F 2
1 L 19
2 L 2
1 R 2
2 F 2
1 F 5
1 L 28
1 R 1
2 L 2
1 L 2
3 R 2
3 L 17
3 L 2
1 R 25
2 R 19
3 F 1
3 F 2
1 R 21
1 L 2
2 F 1
2 R 14
3 F 4
1 F 3
1 R 13
1 R 2
1 F 1
2 L 2
1 F 1
1 L 2
2 F 5
2 L 9
3 F 1
1 F 3
1 F 1
3 F 1
2 L 5
2 F 2
46 3
4 14
34 1 E
28 2 S
34 2 W
23 1 E
3 F 2
1 F 4
1 L 2
4 F 6
3 F 4
2 F 6
4 F 5
4 F 5
3 F 6
2 F 5
4 F 2
3 F 6
4 L 29
1 L 2
22 18
7 43
1 5 W
17 11 S
1 14 W
7 13 N
6 1 E
15 9 W
18 1 S
1 F 5
4 F 1
6 F 1
7 F 4
3 F 2
4 F 1
3 L 3
4 L 2
1 F 1
4 F 2
7 L 2
2 R 10
1 F 2
7 F 4
4 F 4
3 R 9
3 R 17
5 F 6
4 R 2
2 F 6
5 F 1
1 F 1
1 F 5
5 R 2
1 F 3
7 R 2
7 R 2
6 F 5
5 F 1
5 L 2
2 R 2
5 F 5
7 L 28
7 R 2
7 L 2
2 F 1
4 F 5
2 F 6
7 R 2
1 F 1
1 R 2
5 F 4
7 F 4
33 26
40 100
9 16 E
1 14 N
13 23 W
3 6 W
6 20 S
4 21 E
12 25 E
5 23 S
24 4 W
20 3 E
17 7 N
8 22 S
6 12 W
1 16 N
32 22 E
15 1 E
4 14 S
17 19 S
1 4 W
26 9 E
24 24 E
14 10 E
1 17 S
10 20 N
31 8 N
15 5 E
24 20 E
27 13 E
9 7 N
30 20 W
21 4 S
27 5 N
26 15 W
32 7 E
18 21 W
21 19 N
6 18 W
9 4 W
13 1 E
2 8 S
36 R 2
39 F 1
3 F 5
35 L 2
30 F 9
29 L 2
3 L 2
26 F 5
14 L 10
24 F 9
9 L 24
17 F 5
23 F 2
23 F 4
34 F 2
18 F 4
15 F 1
17 F 7
39 L 6
32 F 1
7 F 6
38 R 2
19 L 6
2 R 2
5 F 1
10 F 5
4 L 2
38 F 3
2 F 8
37 R 2
6 L 13
5 F 2
13 F 5
1 F 9
33 F 6
20 F 3
12 F 1
21 L 27
22 F 9
21 F 3
32 L 16
28 F 1
29 L 7
15 F 1
12 F 8
23 F 8
33 F 5
9 F 4
14 R 11
38 F 7
16 L 2
18 R 4
27 F 7
40 R 8
23 F 1
11 L 31
39 F 6
24 F 4
23 F 1
12 F 7
19 F 6
14 F 5
7 L 2
27 R 2
11 F 9
27 L 4
38 F 7
4 L 8
29 F 2
29 L 31
33 F 4
33 F 9
7 F 7
11 F 6
14 F 1
25 F 9
6 R 5
8 R 2
32 R 2
34 R 2
19 L 20
27 L 5
16 R 28
18 F 9
20 F 3
21 L 2
39 F 4
31 F 3
16 F 2
19 R 2
31 F 4
38 F 1
28 R 2
33 F 1
8 F 5
37 R 18
8 L 8
15 R 2
22 F 8
2 R 2
14 26
2 1
13 24 W
4 13 E
1 L 2
30 35
11 100
10 8 S
19 3 E
22 7 N
17 32 E
19 4 N
8 4 E
26 23 S
11 14 N
21 30 N
8 1 S
21 3 S
1 R 28
2 F 2
10 F 7
6 R 2
8 F 2
4 F 6
4 R 2
4 F 1
1 F 10
1 L 2
6 F 7
10 R 27
3 L 2
7 F 2
5 F 1
8 F 1
1 R 2
1 L 2
11 F 8
3 F 2
7 R 2
10 R 2
4 L 30
3 F 1
3 F 5
10 F 5
6 R 2
4 F 1
6 L 27
4 F 7
8 R 17
9 F 10
1 L 20
1 F 6
4 F 1
11 R 26
3 F 2
1 F 6
4 F 1
10 F 1
8 F 1
8 R 13
7 F 2
1 F 2
8 L 24
5 F 8
11 F 1
6 F 1
11 R 2
3 R 2
3 F 6
3 R 11
5 F 8
10 F 6
11 L 2
11 L 2
4 F 9
4 R 23
5 F 6
1 R 2
10 F 8
1 L 2
4 L 31
7 L 2
5 F 3
4 F 7
2 L 6
4 R 1
10 R 24
8 F 10
2 R 12
7 F 4
4 L 2
1 F 1
8 F 1
5 L 24
1 L 2
3 F 1
4 L 14
10 L 2
11 F 3
3 F 1
2 L 2
5 F 2
4 R 2
11 F 3
11 F 6
8 F 9
5 L 2
6 F 9
10 F 8
2 F 1
1 F 7
1 L 20
8 F 6
1 R 2
3 F 3
11 R 2
1 R 16
3 F 9
19 8
2 2
14 1 W
12 7 E
2 F 4
2 F 1
27 32
2 6
21 23 E
10 16 E
2 F 1
2 F 3
1 F 4
2 F 6
1 L 15
1 F 7
24 39
29 1
22 22 W
5 5 N
6 1 S
8 29 N
12 30 N
14 34 S
4 21 E
3 28 N
15 9 E
1 12 E
20 1 W
15 27 N
23 1 N
20 36 E
19 1 S
2 32 N
9 5 N
4 37 S
17 6 N
11 23 S
18 36 N
9 11 N
12 35 W
12 21 S
1 5 W
5 17 E
4 3 E
17 9 E
5 19 W
12 L 4
90 24
100 21
24 24 N
13 7 S
65 22 S
57 20 N
62 8 W
34 21 S
70 23 W
58 19 W
26 17 S
23 4 E
56 12 N
21 18 S
23 21 S
24 19 S
36 11 S
25 5 N
9 17 N
36 1 E
21 17 E
71 11 E
89 20 W
75 15 E
84 12 S
80 8 W
46 16 E
6 9 N
89 9 W
14 20 E
31 1 W
66 13 E
2 6 W
69 24 W
78 15 E
5 4 N
11 11 N
16 15 E
50 10 S
2 19 W
88 11 N
46 4 W
23 3 S
42 18 S
84 14 E
10 5 N
25 7 W
4 24 E
23 6 E
44 2 E
43 19 E
46 20 E
48 11 E
37 22 N
35 1 W
57 8 W
56 6 W
24 5 W
12 16 W
72 6 W
62 6 W
83 4 N
38 12 S
59 7 S
87 2 N
56 8 S
78 8 S
90 18 N
13 17 S
62 11 S
81 17 W
65 2 S
90 11 W
82 17 E
78 7 S
79 23 W
57 18 W
64 23 E
49 14 S
58 18 S
53 9 N
5 3 S
81 18 N
38 5 S
59 1 E
56 21 S
9 6 S
61 24 W
25 10 S
19 21 E
57 13 N
37 7 E
35 18 N
83 7 N
30 10 N
86 3 W
29 6 N
5 6 S
5 14 W
42 8 S
50 1 N
30 6 S
38 R 9
49 F 5
35 L 17
18 R 25
1 R 2
72 R 19
3 L 2
42 R 2
43 R 2
61 F 10
23 F 7
96 L 31
49 F 3
58 F 18
54 F 9
43 F 15
61 R 2
84 F 8
16 F 1
6 R 2
95 R 2
98 27
100 100
22 27 N
57 13 E
46 16 E
73 27 S
42 14 E
26 17 W
69 22 E
28 3 N
11 19 E
21 3 W
58 8 E
6 20 N
19 7 E
25 15 E
63 26 S
96 27 N
38 9 N
10 19 W
67 12 N
73 24 E
38 15 W
14 21 E
22 10 E
48 3 S
22 13 N
7 12 W
85 12 W
29 13 E
64 23 E
6 23 E
77 3 W
53 18 E
45 26 N
9 22 W
77 7 S
7 21 W
65 19 N
62 22 W
31 25 W
72 20 S
34 5 E
8 26 E
98 10 S
74 4 N
29 17 W
48 5 E
42 26 S
13 21 S
83 16 N
56 21 W
87 11 S
65 13 W
8 5 W
68 8 W
62 7 E
50 23 N
61 24 S
48 4 N
62 24 E
79 1 W
64 7 N
63 6 N
16 14 E
76 8 N
29 18 N
16 12 E
5 19 W
77 11 N
44 25 S
36 21 W
85 25 W
16 11 N
71 9 S
27 13 S
43 9 W
87 3 N
11 5 N
49 8 W
82 6 E
36 3 N
38 14 S
41 25 S
72 2 W
98 6 E
16 4 E
31 21 W
78 8 W
75 21 N
4 21 W
48 14 W
62 13 N
27 11 W
79 21 S
45 13 E
31 15 S
26 14 E
31 9 W
10 2 N
38 27 W
57 7 S
19 L 29
42 F 1
56 R 2
44 F 1
90 R 19
53 R 6
52 R 2
16 R 30
34 R 28
78 F 6
1 F 4
12 F 2
41 R 2
24 L 2
71 F 17
10 F 12
52 L 2
83 F 10
37 F 14
49 L 27
25 F 16
71 F 5
44 L 2
50 R 26
94 F 3
15 F 1
73 F 11
34 F 3
91 L 26
19 L 2
25 L 2
46 R 2
84 L 18
3 F 12
44 L 2
11 F 8
48 L 2
73 L 30
74 L 2
19 L 2
54 R 23
9 F 6
49 F 11
78 L 2
56 R 2
36 R 19
57 F 6
2 F 5
88 L 29
33 L 27
37 R 2
88 F 16
61 F 18
53 R 2
13 R 8
100 L 28
20 L 2
49 F 13
48 F 10
4 L 15
45 F 1
1 F 7
68 L 2
30 L 6
80 R 10
44 F 1
73 F 16
82 L 2
62 L 2
94 L 10
4 F 5
86 F 18
43 L 9
99 F 4
97 F 7
100 L 2
61 F 17
70 R 2
20 F 9
70 F 5
34 F 17
43 R 8
15 F 11
24 F 15
25 F 20
78 F 10
43 R 19
96 R 2
95 R 15
50 F 9
55 F 13
1 F 17
87 R 2
86 L 25
69 L 2
74 R 26
6 L 7
77 F 9
49 F 8
12 R 6
79 61
100 100
69 58 S
8 37 N
30 10 E
75 23 S
9 58 N
35 46 N
6 50 S
36 22 W
5 28 S
42 32 E
72 41 N
73 8 W
65 46 S
11 23 E
3 42 S
35 17 S
36 30 N
48 17 S
33 44 W
7 22 W
62 54 E
17 43 S
37 17 E
74 7 S
44 15 N
65 13 N
41 17 S
15 21 N
51 46 E
50 10 E
29 30 W
40 60 W
27 24 S
10 13 E
21 45 S
36 54 E
54 41 W
39 6 S
45 47 W
63 34 S
12 31 S
56 43 S
51 54 W
42 7 N
72 45 W
63 24 W
50 38 S
53 21 N
55 36 S
54 60 S
71 44 N
44 55 N
68 48 W
2 47 W
12 37 N
17 57 E
51 61 N
55 8 N
18 21 N
78 36 E
61 27 W
7 27 N
37 9 S
13 29 W
49 12 W
67 61 S
78 3 S
58 31 S
51 4 W
77 29 W
42 22 S
45 43 S
9 6 W
63 11 S
31 21 N
78 42 E
39 13 S
16 2 N
56 58 S
68 25 W
72 6 W
57 51 W
40 42 E
31 7 E
69 11 S
60 22 N
56 44 S
59 13 W
3 53 N
54 44 N
70 51 N
58 50 N
32 32 W
17 16 E
63 13 E
37 51 N
22 29 E
27 60 S
2 18 E
20 59 S
71 F 15
25 R 8
8 F 17
26 R 30
72 F 20
22 R 2
92 R 31
12 F 19
35 L 2
72 F 5
55 F 19
37 F 14
91 L 18
8 L 31
91 F 5
92 L 2
40 L 1
90 F 1
5 F 8
63 R 22
67 R 5
70 F 21
84 F 1
90 L 2
80 L 2
74 F 19
52 F 18
55 L 18
50 L 2
60 F 17
26 F 4
51 F 23
65 F 9
13 F 7
5 R 2
61 R 2
30 F 8
24 F 19
6 L 2
51 F 9
19 R 25
58 F 22
62 R 5
93 L 5
58 R 2
69 L 2
84 L 2
55 L 31
91 F 6
69 L 29
62 F 6
67 F 3
64 R 2
1 R 30
90 F 9
8 L 2
15 R 2
46 R 27
45 F 11
86 F 10
34 R 2
66 F 19
63 F 4
94 L 19
25 F 12
30 L 2
86 L 27
34 F 1
31 F 9
70 L 31
72 L 30
10 F 2
88 L 2
13 F 10
80 F 14
19 L 25
77 R 2
72 F 13
44 R 31
25 F 8
27 R 1
19 F 21
88 F 19
79 F 5
49 F 11
63 L 22
91 L 30
30 F 19
40 R 2
18 L 2
88 L 2
28 R 3
27 R 2
82 F 1
14 F 1
100 R 2
46 F 5
2 R 2
70 L 25
23 F 16
20 90
73 4
5 88 N
10 9 N
4 28 W
10 36 E
4 88 W
4 68 S
3 2 S
12 44 E
4 84 W
14 48 E
1 7 S
12 84 S
8 2 N
18 44 S
2 80 S
18 15 N
12 58 W
7 34 S
19 64 E
9 20 W
18 81 S
4 30 S
10 21 W
14 18 N
11 90 N
18 17 S
14 69 W
10 16 N
12 81 W
17 21 E
15 77 S
8 25 S
19 47 S
1 57 E
16 21 E
13 22 S
9 68 W
16 3 S
12 37 E
19 73 S
13 30 E
14 24 E
11 65 E
13 39 W
9 36 E
13 27 S
13 67 W
10 48 E
15 75 E
2 1 W
12 75 E
3 45 S
9 58 E
8 9 S
4 32 E
11 54 E
13 75 S
11 75 N
7 81 E
1 59 S
10 42 E
12 31 S
4 87 N
20 46 E
5 29 N
16 20 S
13 84 W
9 78 N
5 63 S
10 90 W
6 46 W
14 57 W
11 43 S
15 F 10
56 R 2
34 F 16
39 F 10
100 100
100 100
42 58 S
49 6 N
40 70 W
8 97 N
57 65 S
85 68 E
75 45 E
17 59 N
43 40 W
2 84 W
14 96 E
12 7 W
10 26 N
48 41 N
82 73 N
53 39 N
49 87 W
96 43 W
4 11 E
63 72 W
45 58 N
23 20 W
69 77 W
15 49 N
61 8 E
47 90 E
88 11 W
60 26 S
89 25 E
11 9 N
62 61 E
62 60 N
93 32 N
59 30 E
38 64 N
14 46 W
74 2 N
47 40 N
72 87 S
58 17 E
97 89 E
68 6 W
82 20 W
73 85 E
61 75 N
42 9 N
45 96 E
84 94 N
26 36 S
44 63 W
35 52 E
97 67 E
98 22 W
2 16 W
88 36 S
86 92 W
67 39 W
4 82 N
48 61 S
23 7 W
41 4 N
98 38 E
65 36 N
48 16 N
61 11 N
52 30 S
16 46 E
54 75 N
42 63 W
37 79 W
29 50 N
81 58 S
42 32 S
60 75 E
6 56 W
82 9 W
23 96 N
95 26 E
62 18 S
54 1 N
87 89 W
26 79 N
20 20 N
91 56 W
6 74 W
57 9 N
25 12 N
39 58 S
57 2 W
33 21 N
69 59 N
10 23 W
26 7 E
25 76 S
74 12 W
87 40 E
7 97 W
50 81 S
78 63 N
51 96 N
34 F 12
77 F 4
75 F 3
5 L 27
17 F 8
77 R 2
87 F 30
8 F 5
95 F 13
17 L 12
70 R 2
45 F 15
44 R 27
76 L 59
91 F 9
89 L 2
67 F 27
76 F 7
73 F 10
73 F 8
15 R 27
47 F 5
49 L 16
82 R 2
15 F 10
56 F 2
40 F 26
37 L 26
7 R 2
19 L 2
42 F 1
76 F 2
37 L 3
73 R 14
5 R 2
67 F 25
15 R 2
64 F 1
61 L 2
16 L 21
89 R 2
37 F 12
80 R 29
96 R 11
90 F 20
44 R 3
46 F 3
56 L 2
36 L 2
95 L 16
45 R 2
75 F 2
22 R 27
71 F 6
22 L 7
27 F 3
90 F 5
10 F 1
88 R 2
24 L 29
91 R 14
21 L 22
91 F 9
46 L 2
82 R 3
50 R 2
76 R 11
47 L 2
96 L 4
34 F 9
72 F 27
35 L 28
96 F 17
21 F 16
55 F 22
89 L 17
60 R 26
7 F 22
23 R 20
16 R 31
62 L 12
60 L 2
8 L 1
29 R 10
58 F 18
36 F 8
55 F 7
4 F 2
69 L 23
76 L 2
31 F 21
29 F 3
14 L 2
94 R 2
34 L 27
21 L 2
78 L 7
4 R 2
9 F 29
78 F 16

output:
Robot 1 crashes into the wall
OK
Robot 9 crashes into robot 6
Robot 9 crashes into robot 2
Robot 9 crashes into robot 3
Robot 9 crashes into robot 7
Robot 2 crashes into the wall
Robot 3 crashes into robot 2
Robot 4 crashes into the wall
Robot 12 crashes into the wall
Robot 2 crashes into the wall
Robot 3 crashes into the wall
Robot 2 crashes into the wall
Robot 2 crashes into the wall
OK
Robot 33 crashes into robot 32
Robot 25 crashes into robot 15
Robot 2 crashes into the wall
Robot 3 crashes into the wall
Robot 3 crashes into robot 2
Robot 1 crashes into the wall
Robot 30 crashes into robot 27
OK
Robot 2 crashes into robot 11
OK
OK
OK
Robot 61 crashes into robot 82
Robot 1 crashes into the wall
Robot 71 crashes into robot 44
Robot 34 crashes into robot 72
OK