HDU 2101 A计划

点击打开链接http://acm.hdu.edu.cn/showproblem.php?pid=2102

AC代码       用到三维数组 ，第二次写的代码，因为memset(s,'*',sizeof(s));这里写错了，WA了无数次；

// hdu 2102 A ji hua (xiu gai ban)
#include<iostream>
#include<queue>
#include<cstdio>
#include<cstring>
using namespace std;

#define N 15
struct point
{
	int x, y, floor, time;
} st;
int m, n, t, flag;
char s[2][N][N];
int move[4][2] = {0, -1, 0, 1, -1, 0, 1, 0};
queue<point>q;

void bfs();

int main()
{
	//freopen("1.in", "r", stdin);
	int tt;
	scanf("%d", &tt);

	while (tt--)
	{
		int i, j;
		scanf("%d %d %d", &n, &m, &t);

		memset(s,'*',sizeof(s));

		for (i = 0; i < 2; i++)
		{
			for (j = 0; j < n; j++)
			{
				scanf("%s", s[i][j]);
			}
		}
		flag = 0;
		st.x = 0;
		st.y = 0;
		st.floor = 0;
		st.time = 0;
		bfs();
		if(flag) printf("YES\n");
		else printf("NO\n");
	}
}

void bfs()
{
	while(!q.empty())
	{
		q.pop();
	}

	q.push(st);
	while(!q.empty())
	{
		point now = q.front();
		q.pop();
		//printf("x %d y %d f %d t %d\n",now.x, now.y, now.floor, now.time);
		for(int i=0;i<4;i++)
		{
			point next = now;
			int xx = now.x, yy = now.y, f = now.floor;
			//printf("xx %d yy %d\n",xx,yy);
			xx += move[i][0];
			yy += move[i][1];
			next.time++;

			if(next.time>t) continue;
			if(xx<0 || xx>=n || yy<0 || yy>=m)	continue;
			if(s[f][xx][yy] == '*') continue;

			if (s[f][xx][yy] == 'P')
			{
				flag = 1;
				return;
			}
			if(s[f][xx][yy]=='#' && s[1-f][xx][yy] == 'P')
			{
				flag = 1;
				return;
			}

			if(s[f][xx][yy]=='#' && s[1-f][xx][yy] == '#')
			{
				s[0][xx][yy] = '*';
				s[1][xx][yy] = '*';
				continue;
			}
			if(s[f][xx][yy]=='#' && s[1-f][xx][yy] == '*')
			{
				s[0][xx][yy] = '*';
				s[1][xx][yy] = '*';
				continue;
			}
			if(s[f][xx][yy]=='#' && s[1-f][xx][yy] == '.')
			{
				s[f][xx][yy] = '*';
				s[1-f][xx][yy] = '*';
				next.floor = 1-f;
				next.x = xx;
				next.y = yy;
			}
			if(s[f][xx][yy] == '.')
			{
				s[f][xx][yy] = '*';
				next.x = xx;
				next.y = yy;
			}
			q.push(next);
		}
	}
}

第一次写的代码，还是WA，不知原因啊》》》

//hdu 2102 A¼Æ»®
#include<iostream>
#include<queue>
#include<cstring>
#include<cstdio>
using namespace std;
struct point
{
	int x, y, floor, time;
} st;
int m, n, t, flag;
char s1[15][15], s2[15][15];
int vis1[15][15], vis2[15][15];
int move[4][2] = {0, -1, 0, 1, -1, 0, 1, 0};
queue<point>q;
void bfs();
int main()
{
	//freopen("1.in", "r", stdin);
	int tt;
	cin >> tt;

	while (tt--)
	{
		int i, j ;
		cin >> n >> m >> t;
		memset(s1,'*',sizeof(s1));
		memset(s2,'*',sizeof(s2));

		for (i = 0; i < n; i++)
		{
			cin >> s1[i];
		}

		for (i = 0; i < n; i++)
		{
			cin >> s2[i];
		}

		for (i = 0; i < n; i++)
		{
			for (j = 0; j < m; j++)
			{
				if (s1[i][j] == 'S')
				{
					st.x = i;
					st.y = j;
					st.floor = 1;
					st.time = 0;
					break;
				}

				if (s2[i][j] == 'S')
				{
					st.x = i;
					st.y = j;
					st.floor = 2;
					st.time = 0;
					break;
				}
			}
		}

		memset(vis1, 0, sizeof(vis1));
		memset(vis2, 0, sizeof(vis2));
		flag = 0;
		bfs();

		if (flag)
		{
			printf("YES\n");
		}
		else
		{
			printf("NO\n");
		}
	}

	return 0;
}
void bfs()
{
	while (!q.empty())
	{
		q.pop();
	}

	q.push(st);

	while (!q.empty())
	{
		point now = q.front();
		q.pop();

		//printf("x %d,y %d, f %d, t %d\n",now.x,now.y,now.floor,now.time);
		for (int i = 0; i < 4; i++)
		{
			int xx = now.x, yy = now.y;
			xx += move[i][0];
			yy += move[i][1];

			if (s1[xx][yy] == 'P' && now.floor == 1 && now.time < t)
			{
				flag = 1;
				return;
			}

			if (s2[xx][yy] == 'P' && now.floor == 2 && now.time < t)
			{
				flag = 1;
				return;
			}

			if (xx >= 0 && xx < n && yy >= 0 && yy < m && now.time <= t)
			{
				point next = now;

				if (now.floor == 1 && !vis1[xx][yy])
				{
					if (s1[xx][yy] == '.')
					{
						vis1[xx][yy] = 1;
						next.x = xx;
						next.y = yy;
						next.floor = 1;
						next.time++;
						q.push(next);
					}
					else if (s1[xx][yy] == '#' && s2[xx][yy] != '*' && s2[xx][yy] != '#' && !vis2[xx][yy])
					{
						if(s2[xx][yy] == 'P') {flag = 1; return;}
						else
						{
							vis2[xx][yy] = 1;
							next.x = xx;
							next.y = yy;
							next.floor = 2;
							next.time++;
							q.push(next);
						}
					}
				}

				else if (now.floor == 2 && !vis2[xx][yy])
				{
					if (s2[xx][yy] == '.')
					{
						vis2[xx][yy] = 1;
						next.x = xx;
						next.y = yy;
						next.floor = 2;
						next.time++;
						q.push(next);
					}
					else if (s2[xx][yy] == '#' && s1[xx][yy] != '*' && s1[xx][yy] != '#' && !vis1[xx][yy])
					{
						if(s1[xx][yy] == 'P') {flag = 1;return;}
						else
						{
							vis1[xx][yy] = 1;
							next.x = xx;
							next.y = yy;
							next.floor = 1;
							next.time++;
							q.push(next);
						}
					}
				}
				else
				{
					continue;
				}
			}
		}
	}
}