九野的博客,转载请注明出处:http://blog.csdn.net/acmmmm/article/details/11711743
题意:驴和老虎在方格中跑,跑的方式:径直跑,若遇到边界或之前走过的点则转向,驴向右转,虎向左转,若转向后还不能跑则一直呆着不动,
问:他们是否会相遇,会输出相遇坐标,不会输出-1
#include <iostream>
#include <algorithm>
#include <cstdlib>
#include <cstring>
#include <string>
#include <vector>
#include <cstdio>
#include <queue>
#include <cmath>
#include <string.h>
#include <assert.h>
#include <stack>
#include <sstream>
#include <map>
#include <set>
#define M 1020
#define LL __int64
using namespace std;
bool vis1[M][M];
bool vis2[M][M];
int dx[4]={0,1,0,-1};
int dy[4]={1,0,-1,0}; int main()
{
int i,j,x1,y1,z1,x2,y2,z2,xx1,yy1,xx2,yy2,n;
bool flag,ok1,ok2;
while(scanf("%d",&n),n)
{
scanf("%d%d%d",&x1,&y1,&z1);
scanf("%d%d%d",&x2,&y2,&z2);
memset(vis1,false,sizeof(vis1));
memset(vis2,false,sizeof(vis2));
ok1=true;
ok2=true;
flag=false;
while(1)
{
if(x1==x2&&y1==y2)
{
flag=true;
break;
}
if(!ok1&&!ok2)
break;
vis1[x1][y1]=true;
vis2[x2][y2]=true;
if(ok1)
{
xx1=x1+dx[z1];
yy1=y1+dy[z1];
if(xx1>=0&&xx1<n&&yy1>=0&&yy1<n&&!vis1[xx1][yy1])
{
x1=xx1;
y1=yy1;
z1=z1;
}
else
{
xx1=x1+dx[(z1+1)%4];
yy1=y1+dy[(z1+1)%4];
if(xx1>=0&&xx1<n&&yy1>=0&&yy1<n&&!vis1[xx1][yy1])
{
x1=xx1;
y1=yy1;
z1=(z1+1)%4;
}
else
{
x1=x1;
y1=y1;
z1=z1;
ok1=false;
}
}
}
if(ok2)
{
xx2=x2+dx[z2];
yy2=y2+dy[z2];
if(xx2>=0&&xx2<n&&yy2>=0&&yy2<n&&!vis2[xx2][yy2])
{
x2=xx2;
y2=yy2;
z2=z2;
}
else
{
xx2=x2+dx[((z2-1)%4+4)%4];
yy2=y2+dy[((z2-1)%4+4)%4];
if(xx2>=0&&xx2<n&&yy2>=0&&yy2<n&&!vis2[xx2][yy2])
{
x2=xx2;
y2=yy2;
z2=((z2-1)%4+4)%4;
}
else
{
x2=x2;
y2=y2;
z2=z2;
ok2=false;
}
}
}
}
if(flag)
{
printf("%d %d\n",x1,y1);
}
else
{
printf("-1\n");
}
}
return 0;
}