HDU 1242
来源:互联网 发布:java 自定义日志注解 编辑:程序博客网 时间:2024/06/06 05:46
Rescue
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 20225 Accepted Submission(s): 7223
Problem Description
Angel was caught by the MOLIGPY! He was put in prison by Moligpy. The prison is described as a N * M (N, M <= 200) matrix. There are WALLs, ROADs, and GUARDs in the prison.
Angel's friends want to save Angel. Their task is: approach Angel. We assume that "approach Angel" is to get to the position where Angel stays. When there's a guard in the grid, we must kill him (or her?) to move into the grid. We assume that we moving up, down, right, left takes us 1 unit time, and killing a guard takes 1 unit time, too. And we are strong enough to kill all the guards.
You have to calculate the minimal time to approach Angel. (We can move only UP, DOWN, LEFT and RIGHT, to the neighbor grid within bound, of course.)
Input
First line contains two integers stand for N and M.
Then N lines follows, every line has M characters. "." stands for road, "a" stands for Angel, and "r" stands for each of Angel's friend.
Process to the end of the file.
Output
For each test case, your program should output a single integer, standing for the minimal time needed. If such a number does no exist, you should output a line containing "Poor ANGEL has to stay in the prison all his life."
Sample Input
7 8
#.#####.
#.a#..r.
#..#x...
..#..#.#
#...##..
.#......
........
Sample Output
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 20225 Accepted Submission(s): 7223
Problem Description
Angel was caught by the MOLIGPY! He was put in prison by Moligpy. The prison is described as a N * M (N, M <= 200) matrix. There are WALLs, ROADs, and GUARDs in the prison.
Angel's friends want to save Angel. Their task is: approach Angel. We assume that "approach Angel" is to get to the position where Angel stays. When there's a guard in the grid, we must kill him (or her?) to move into the grid. We assume that we moving up, down, right, left takes us 1 unit time, and killing a guard takes 1 unit time, too. And we are strong enough to kill all the guards.
You have to calculate the minimal time to approach Angel. (We can move only UP, DOWN, LEFT and RIGHT, to the neighbor grid within bound, of course.)
Input
First line contains two integers stand for N and M.
Then N lines follows, every line has M characters. "." stands for road, "a" stands for Angel, and "r" stands for each of Angel's friend.
Process to the end of the file.
Output
For each test case, your program should output a single integer, standing for the minimal time needed. If such a number does no exist, you should output a line containing "Poor ANGEL has to stay in the prison all his life."
Sample Input
7 8
#.#####.
#.a#..r.
#..#x...
..#..#.#
#...##..
.#......
........
Sample Output
13
//我真是弱爆了,一个x写成大写调试了N久才出来,都是泪啊。。。 bfs+优先队列
#include <stdio.h>#include <queue>#include <string.h>using namespace std;int n,m,stax,stay,stox,stoy;char ma[210][210];bool vis[210][210];int dir[4][2]={{-1,0},{1,0},{0,-1},{0,1}};struct Node{ int x,y,step; friend bool operator <(const Node &a,const Node &b) { return a.step>b.step; }};int bfs(int xx,int yy){ priority_queue <Node> q; memset(vis,0,sizeof(vis)); Node a; a.x=xx,a.y=yy,a.step=0; q.push(a); while(!q.empty()) { Node b=q.top(); q.pop(); vis[b.x][b.y]=1; if(b.x==stox&&b.y==stoy) return b.step; for(int i=0;i<4;i++) { Node c=b; c.x+=dir[i][0]; c.y+=dir[i][1]; if(ma[c.x][c.y]=='x') c.step+=2; else c.step++; if(c.x>=0&&c.x<n&&c.y>=0&&c.y<m&&ma[c.x][c.y]!='#'&&!vis[c.x][c.y]) { q.push(c); vis[c.x][c.y]=1; } } } return -1;}int main(){ while(~scanf("%d%d",&n,&m)) { stox=-1,stoy=-1; for(int i=0;i<n;i++) { scanf("%s",ma[i]); } for(int i=0;i<n;i++) { for(int k=0;k<m;k++) { if(ma[i][k]=='r') { stax=i; stay=k; } if(ma[i][k]=='a') { stox=i; stoy=k; } } } int cnt=bfs(stax,stay); if(cnt!=-1) printf("%d\n",cnt); else printf("Poor ANGEL has to stay in the prison all his life.\n"); } return 0;
0 0
- hdu 1242
- hdu 1242
- HDU 1242
- hdu 1242
- hdu-1242
- HDU 1242
- hdu--1242
- HDU 1242
- HDU 1242
- HDU 1242
- hdu 1242
- HDU 1242
- hdu 1242
- HDU 1242
- hdu 1242 Rescue
- hdu 1242 bfs
- dfs hdu 1242
- HDU-1242-Rescue
- java学习之旅59--模拟ArrayList容器的底层实现_JDK源码分析ArrayList
- 第十二节 多线程编程
- TDNN时延神经网络
- C++ 模板详解(一)
- js操作cookie
- HDU 1242
- 包装质料---五种常见巧克力包装质料简介
- [资源贴]黑马iOS培训视频
- 数据挖掘学习整理(十)分类算法
- 黑马程序员-oc基础-NSString和NSMutableString区别
- SED命令详解
- C++ 模板详解(二)
- redis应用
- GCD中一些API的使用