poj 2632 Crashing Robots

http://poj.org/problem?id=2632

题意：判断机器人在行走的过程中的状况；

思路：简单的模拟题，就是有点麻烦；

代码：

#include <cstdio>
#include <iostream>
#include <algorithm>
#include <cstdlib>
#include <cstring>
using namespace std;
struct node
{
    int x;
    int y;
    int ford;
}link[110];
int x = 0;
int y = 0;
int visit[110][110] = {0};
bool biao = 1;
void out(int x,int y,char c,int i)
{
    link[i].x = x;
    link[i].y = y;
    switch(c)
    {
        case 'N':link[i].ford = 1;break;
        case 'W':link[i].ford = 2;break;
        case 'S':link[i].ford = 3;break;
        case 'E':link[i].ford = 4;break;
        default :break;
    }
}
void printcrash(int a,int b)
{
    printf("Robot %d crashes into robot %d\n",b,a);
}
void printout(int a)
{
    printf("Robot %d crashes into the wall\n",a);

}
void move1(int a,int b)
{
    for(int i = link[a].y +1; i <= link[a].y+b; ++i)
    {
        if(i > y)
        {
        printout(a);
         biao = 0;
         break;
        }
        if(visit[link[a].x][i])
        {
        printcrash(visit[link[a].x][i],a);
        biao = 0;
        break;
        }
    }
    visit[link[a].x][link[a].y] = 0;
    visit[link[a].x][link[a].y+b] = a;
    link[a].y = link[a].y + b;
}
void move2(int a,int b)
{
    for(int i = link[a].x -1; i >= link[a].x-b; --i)
    {
        if(i < 1)
        {
        printout(a);
         biao = 0;
         break;
        }
        if(visit[i][link[a].y])
        {
        printcrash(visit[i][link[a].y],a);
        biao = 0;
        break;
        }
    }
    visit[link[a].x][link[a].y] = 0;
    visit[link[a].x - b][link[a].y] = a;
    link[a].x = link[a].x - b;
}
void move3(int a,int b)
{
    for(int i = link[a].y -1; i >= link[a].y - b; --i)
    {
        if(i < 1)
        {
        printout(a);
         biao = 0;
         break;
        }
        if(visit[link[a].x][i])
        {
        printcrash(visit[link[a].x][i],a);
        biao = 0;
        break;
        }
    }
    visit[link[a].x][link[a].y] = 0;
    visit[link[a].x][link[a].y-b] = a;
    link[a].y = link[a].y - b;
}
void move4(int a,int b)
{
    for(int i = link[a].x +1; i <= link[a].x+b; ++i)
    {
        if(i > x)
        {
        printout(a);
         biao = 0;
         break;
        }
        if(visit[i][link[a].y])
        {
        printcrash(visit[i][link[a].y],a);
        biao = 0;
        break;
        }
    }
    visit[link[a].x][link[a].y] = 0;
    visit[link[a].x + b][link[a].y] = a;
    link[a].x = link[a].x +b;
}
void move(int a,char c,int b)
{
    switch(c)
    {
        case 'F':
        {
            switch(link[a].ford)
            {
                case 1:move1(a,b);break;
                case 2:move2(a,b);break;
                case 3:move3(a,b);break;
                case 4:move4(a,b);break;
                default :break;
            }
        }break;
        case 'L':{link[a].ford +=b,link[a].ford = link[a].ford % 4;if(link[a].ford == 0) link[a].ford = 4;}break;
        case 'R':{link[a].ford = link[a].ford - b%4;if(link[a].ford < 1) link[a].ford +=4;}break;
        default :break;
    }
}
int main()
{
   int nn = 0;
   scanf("%d",&nn);
   while(nn--)
   {
       memset(visit,0,sizeof(visit));
       biao = 1;
       int x1 = 0;
       int y1 = 0;
       char c = '\0';
       int num = 0;
       int n = 0;
       int a = 0;
       int b = 0;
       scanf("%d%d",&x,&y);
       scanf("%d%d",&num,&n);
       for(int i = 1; i <= num; ++i)
       {
           scanf("%d %d",&x1,&y1);
           getchar();
           scanf("%c",&c);
           out(x1,y1,c,i);
           visit[x1][y1] = i;
       }
       for(int i = 1; i <= n; ++i)
       {
           scanf("%d",&a);
           getchar();
           scanf("%c",&c);
           scanf("%d",&b);
           if(biao)
           move(a,c,b);
       }
       if(biao)
       printf("OK\n");
   }
   return 0;
}