UVa10047 - The Monocycle

题目地址：点击打开链接

数组int visited[maxsize][maxsize][4][5];//4代表4个方向，5代编5中颜色,0,1,2,3代编北东南东西,Color:0,1,2,3,4

用来标记到达某个点的方向，颜色和时间。

注意输出格式！

C++代码：

#include <iostream>
#include <string>
#include <deque>
#include <cmath>
#include <cstring>
using namespace std;
const  int maxsize = 30;
string s[maxsize];
int visited[maxsize][maxsize][4][5];//4代表4个方向，5代编5中颜色,0,1,2,3代编北东南东西,Color:0,1,2,3,4
int m,n;//m行n列
bool flag;
int start_x,start_y,end_x,end_y;
int add[4][2]={-1,0,0,-1,1,0,0,1};
int t;
struct MyStruct
{
	int x;
	int y;
	int d;
	int c;
};
void bfs(int x,int y,int d,int c)
{
	visited[x][y][d][c]=0;
	deque<MyStruct > dp;
	MyStruct p;
	p.x=x;p.y=y;p.d=d;p.c=c;
	dp.push_back(p);
	while(!dp.empty())
	{
		MyStruct q=dp.front();
		if(q.x==end_x&&q.y==end_y&&q.c==0)
		{
			t=visited[q.x][q.y][q.d][q.c];
			flag=true;
			return ;
		}
		dp.pop_front();
		int x_temp=q.x+add[q.d][0];
		int y_temp=q.y+add[q.d][1];
		int d=q.d;
		int c=(q.c+1)%5;
		if(x_temp>=0&&x_temp<m&&y_temp>=0&&y_temp<n&&visited[x_temp][y_temp][d][c]==-1&&s[q.x][q.y]!=‘#‘)
		{
			MyStruct r;
			r.x=x_temp;r.y=y_temp;r.c=c;r.d=d;
			visited[x_temp][y_temp][d][c]=visited[q.x][q.y][q.d][q.c]+1;
			dp.push_back(r);
		}
		int d1=(q.d+1)%4;
		int d2=(q.d-1+4)%4;
		if(visited[q.x][q.y][d1][q.c]==-1)
		{
			MyStruct r;
			r.x=q.x;r.y=q.y;r.d=d1;r.c=q.c;
			visited[q.x][q.y][d1][q.c]=visited[q.x][q.y][q.d][q.c]+1;
			dp.push_back(r);
		}
		if(visited[q.x][q.y][d2][q.c]==-1)
		{
			MyStruct r;
			r.x=q.x;r.y=q.y;r.d=d2;r.c=q.c;
			visited[q.x][q.y][d2][q.c]=visited[q.x][q.y][q.d][q.c]+1;
			dp.push_back(r);
		}
	}
}
int main()
{
	int cas=1;
	while(cin>>m>>n&&(m||n))
	{
		int i,j;
		for(i=0;i<m;++i)
		{
			cin>>s[i];
			for(j=0;j<n;++j)
			{
				if(s[i][j]==‘S‘)
				{
					start_x=i;
					start_y=j;
				}
				else if(s[i][j]==‘T‘)
				{
					end_x=i;
					end_y=j;
				}
			}
		}
		memset(visited,-1,sizeof(visited));
		flag=false;
		bfs(start_x,start_y,0,0);
		if(cas>1)
			cout<<endl;
		cout<<"Case #"<<cas++<<endl;
		if(flag)
			cout<<"minimum time = "<<t<<" sec"<<endl;
		else
			cout<<"destination not reachable"<<endl;
	}
	return 0;
}

UVa10047 - The Monocycle,布布扣,bubuko.com

UVa10047 - The Monocycle

原文：http://blog.csdn.net/leizh007/article/details/21829695