| ||||||||||
| Online Judge | Problem Set | Authors | Online Contests | User | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Web Board Home Page F.A.Qs Statistical Charts | Current Contest Past Contests Scheduled Contests Award Contest | |||||||||
根据一大牛的dir=(dir+3)%4的思想AC了#include<iostream>
using namespace std;
int direction[4][2]={1,0,0,1,0,-1,-1,0};
int ldire[8][2]={0,-1,-1,0,0,1,1,0,0,-1,-1,0,0,1,1,0};
int rdire[8][2]={0,1,-1,0,0,-1,1,0,0,1,-1,0,0,-1,1,0};
char map[40][40];
int m,n,sx,sy,ex,ey;
int tqueue[160];
int front,rear,size;
void queueinit()
{
front=rear=-1;
size=0;
}
int isempty()
{
return size<=0;
}
void enqueue(int num)
{
tqueue[(++front)%160]=num;
size++;
}
int dequeue()
{
return (tqueue[(++rear)%160]);
size--;
}
void init()
{
int i,j;
cin>>n>>m;
for(i=0;i<m;i++)
for(j=0;j<n;j++)
{
cin>>map[i][j];
if(map[i][j]=='S') {sx=i;sy=j;map[i][j]='.';}
if(map[i][j]=='E') {ex=i;ey=j;map[i][j]='.';}
}
}
int isin(int i,int j)
{
return (i>=0&&i<m&&j>=0&&j<n);
}
void run()
{
int distance,dir;
int pos,xpos,ypos,newx,newy,i;
init();
// left
distance=1;
dir=0;
newx=sx;
newy=sy;
while(newx!=ex||newy!=ey)
{
dir=(dir+3)%4;
for(i=dir;i<dir+4;i++)
{
newx=newx+ldire[i][0];
newy=newy+ldire[i][1];
if(isin(newx,newy)&&map[newx][newy]=='.')
{
dir=i;
distance++;
break;
}
newx=newx-ldire[i][0];
newy=newy-ldire[i][1];
}
}
cout<<distance<<" ";
//right
distance=1;
dir=0;
newx=sx;
newy=sy;
while(newx!=ex||newy!=ey)
{
dir=(dir+3)%4;
for(i=dir;i<dir+4;i++)
{
newx=newx+rdire[i][0];
newy=newy+rdire[i][1];
if(isin(newx,newy)&&map[newx][newy]=='.')
{
dir=i;
distance++;
break;
}
newx=newx-rdire[i][0];
newy=newy-rdire[i][1];
}
}
cout<<distance<<" ";
// direction
queueinit();
enqueue(ex*40+ey);
while(!isempty()&&map[sx][sy]=='.')
{
pos=dequeue();
xpos=pos/40;
ypos=pos%40;
for(i=0;i<4;i++)
{
newx=xpos+direction[i][0];
newy=ypos+direction[i][1];
if(isin(newx,newy)&&map[newx][newy]=='.')
{
map[newx][newy]+=map[xpos][ypos]-'.'+1;
enqueue(newx*40+newy);
}
}
}
cout<<(int)(map[sx][sy]-'.'+1)<<endl;
}
int main()
{
int times;
cin>>times;
while((--times)>=0)
run();
return 1;
}
Followed by: Post your reply here: |
All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator