UVa:10913 Walking on a Grid
来源:互联网 发布:天敏网络机顶盒没反应 编辑:程序博客网 时间:2024/05/17 03:53
上个月刷动规被这个题给卡到,主要是纠结在还可以往左走这个地方上。
今天回切动规,终于想到了办法。
晚上再写具体思路,先贴上代码。
#include <cstdio>#include <cstring>#include <iostream>#define INF -2139062144using namespace std;int main(){ int n,K,kase=0; while(scanf("%d%d",&n,&K)&&!(!n&&!K)) { int grid[80][80]= {0}; for(int i=1; i<=n; ++i) for(int j=1; j<=n; ++j) scanf("%d",&grid[i][j]); int dp[80][80][10][5]; memset(dp,0x80,sizeof(dp)); dp[1][0][0][1]=0; for(int i=1; i<=n; ++i) { int v; for(int j=1; j<=n; ++j) { if(grid[i][j]>=0) v=0; else v=1; for(int k=0; k<=K; ++k) { dp[i][j][k+v][1]=max(dp[i][j-1][k][1],dp[i-1][j][k][0]); if(dp[i][j][k+v][1]!=INF) dp[i][j][k+v][1]+=grid[i][j]; } } for(int j=n; j>=1; --j) { if(grid[i][j]>=0) v=0; else v=1; for(int k=0; k<=K; ++k) { dp[i][j][k+v][2]=max(dp[i][j+1][k][2],dp[i-1][j][k][0]); if(dp[i][j][k+v][2]!=INF) dp[i][j][k+v][2]+=grid[i][j]; } } for(int j=1; j<=n; ++j) for(int k=0; k<=K; ++k) dp[i][j][k][0]=max(dp[i][j][k][1],dp[i][j][k][2]); } int ans=INF; for(int i=0; i<=K; ++i) ans=max(dp[n][n][i][0],ans); printf("Case %d: ",++kase); if(ans==INF) puts("impossible"); else printf("%d\n",ans); } return 0;}
- uva 10913 Walking on a Grid
- UVA 10913 Walking on a Grid
- Uva 10913 - Walking on a Grid
- UVa 10913 - Walking on a Grid dp
- UVA - 10913 Walking on a Grid
- UVa:10913 Walking on a Grid
- uva 10913Walking on a Grid
- uva 10913 Walking on a Grid
- Walking on a Grid - UVa 10913 dp
- uva 10913 - Walking on a Grid
- UVA 10913 - Walking on a Grid
- uva 10913 Walking on a Grid
- UVA - 10913 Walking on a Grid
- UVA - 10913 Walking on a Grid
- uva 10913Walking on a Grid
- 10913 - Walking on a Grid
- 10913 - Walking on a Grid
- Uva 10913 - Walking on a Grid 记忆搜索
- android 改标题名
- 黑马程序员_Java 中的继承与多态
- Mybatis-Migrations 基本的使用方法与注意的地方
- mysql数据库join、left join与right join 的区别
- myEclipse 打开struts-config.xml无法打开报错!--Error opening the editor
- UVa:10913 Walking on a Grid
- 直方图均衡化(python实现)
- 由椭圆一般方程求解椭圆标准方程参数
- GPIO模拟SPI通讯接口
- 分布式存储系统(GlusterFS,Swift,Cassandra)设计对比
- HTML5 ئىشلىتىشنىڭ باھانىسى
- Server Tomcat v6.0 Server at localhost was unable to start within 45 seconds. If the server requires
- 【Linux】【学习笔记】shell/ssh/22端口
- 数据显示Android广告投资回报为负 远不及iOS