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求大神看看这个程序怎么能ac呢,我觉得是错的啊

Posted by TSERROF at 2012-11-08 20:21:38 on Problem 1157
#include <iostream>
#include <cstring>
using namespace std;
int value[102][102],dp[102][102];
int main()
{
	int F,V;
	while(cin>>F>>V)
	{
		for(int i=0;i<F;++i)
			for(int j=0;j<V;++j)
				cin>>value[i][j];
		dp[0][1]=dp[1][0]=-50;
		for(int i=1;i<=F;++i)dp[i][1]=max(value[i-1][0],dp[i-1][1]);
		for(int i=1;i<=V;++i)dp[1][i]=max(value[0][i-1],dp[1][i-1]);
		for(int i=2;i<=F;++i)
			for(int j=2;j<=V;++j)
			{
				int t=dp[i][j-1];
				if(dp[i-1][j-1]+value[i-1][j-1]<0)t=-50000;
				dp[i][j]=max(dp[i-1][j-1]+value[i-1][j-1],t);
			}
		cout<<dp[F][V]<<endl;
	}
	return 0;
}

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