poj 2498 动态规划

思路：简单动态规划

#include<map>
#include<set>
#include<cmath>
#include<queue>
#include<cstdio>
#include<vector>
#include<string>
#include<cstdlib>
#include<cstring>
#include<iostream>
#include<algorithm>
#define pb push_back
#define mp make_pair
#define Maxn 520
#define Maxm 80002
#define LL __int64
#define Abs(x) ((x)>0?(x):(-x))
#define lson(x) (x<<1)
#define rson(x) (x<<1|1)
#define inf 0x7fffffff
#define lowbit(x) (x&(-x))
#define Mod 1000000007
using namespace std;
int dp[Maxn][Maxn],ye[Maxn][Maxn],bio[Maxn][Maxn];
int main()
{
    int n,m,i,j;
    while(scanf("%d%d",&n,&m)!=EOF,n||m){
        memset(dp,0,sizeof(dp));
        for(i=1;i<=n;i++){
            for(j=1;j<=m;j++){
                scanf("%d",&ye[i][j]);
                ye[i][j]+=ye[i][j-1];
            }
        }
        for(i=1;i<=n;i++){
            for(j=1;j<=m;j++){
                scanf("%d",&bio[i][j]);
                bio[i][j]+=bio[i-1][j];
            }
        }
        for(i=1;i<=n;i++){
            for(j=1;j<=m;j++){
                dp[i][j]=max(dp[i-1][j]+ye[i][j],dp[i][j-1]+bio[i][j]);
            }
        }
        printf("%d
",dp[n][m]);
    }
    return 0;
}