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跪求解释

Posted by anlan at 2010-04-09 10:55:02 on Problem 1157
#include<iostream>
#include<stdio.h>

using namespace std;

int p[110][110];//如果p在main函数里定义会wa,求解释

int main()
{
	int i,j,k,max1,f,v,dp[110]={0};
	scanf("%d%d",&f,&v);
	for(i=0;i<f;i++)
	{
		for(j=0;j<v;j++)
		{
			scanf("%d",&p[i][j]);
		}
	}
	for(i=0;i<f;i++)
	{
		for(j=v-1;j>=i;j--)
		{
			max1=-100000;
			for(k=j-1;k>=i-1;k--)
			{
				if(max1<dp[k])max1=dp[k];
			}
			if(j==0)max1=0;
			dp[j]=max1+p[i][j];
		}
	}
	max1=-100000;
	for(i=f-1;i<v;i++)
	{
		if(max1<dp[i])max1=dp[i];
	}
	cout<<max1<<endl;
	return 0;
}

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