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1A过了样例就AC了
#include <iostream>
#include<string>
#include<string.h>
#include<stdio.h>
#include<math.h>
#include<vector>
using namespace std;
int v, p;
int poi[600];
int dp[600][600], co[600][600];
int main()
{
freopen("D:\\CPPProgram\\ACM\\in.txt", "r", stdin);
scanf("%d %d", &v, &p);
for(int i=1; i<=v; i++) scanf("%d", &poi[i]);
memset(co, 0, sizeof co);
for(int a=1; a<=p; a++) dp[a][a] = 0;
for(int a=1; a<=v; a++)
{
for(int b=a+1; b<=v; b++)
{
co[a][b] = co[a][b-1] + poi[b] - poi[(a+b)/2];//此处推导出现错误浪费很多时间
if(a == 1) dp[b][1] = co[a][b];
}
}
for(int a=2; a<=v; a++)
{
for(int b=2; b<=p; b++)
{
if(b >= a) break;
int Min = 99999999;
for(int j=b-1; j<=a-1; j++)
{
if(Min>dp[j][b-1]+co[j+1][a])//之前是这么写的:co[j][a]这是不对的,因为第j个已经配对,只需往后继续找
{
Min = dp[j][b-1]+co[j+1][a];
}
}
dp[a][b] = Min;
}
}
printf("%d\n", dp[v][p]);
return 0;
}
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