http://poj.org/problem?id=2766 /* @author: */ import java.util.Scanner; import java.util.Arrays; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int dx[]={0,1,0,-1},dy[]={1,0,-1,0}; int g[][]=new int[52][52]; int ca,i,j,k,n,r,x,y,dir; ca=sc.nextInt(); while ((ca--)!=0) { n=sc.nextInt(); r=sc.nextInt(); for(i=0;i< g.length;i++) Arrays.fill(g[i],0); for (i=0;i< r;i++) { x=sc.nextInt(); y=sc.nextInt(); g[x][y]=1; } for (i=0;i<=n+1;i++) g[0][i]=g[n+1][i]=g[i][0]=g[i][n+1]=-1; x=sc.nextInt(); y=sc.nextInt(); if (y==0) dir=0; else if (x==0) dir=1; else if (y==n+1) dir=2; else dir=3; x+=dx[dir]; y+=dy[dir]; while (g[x][y]!=-1) { if (g[x][y]!=0) dir=(dir+1)%4; x+=dx[dir]; y+=dy[dir]; } System.out.printf("%d %dn",x,y); } } }
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