HDU 4283 —— You Are the One

题目：http://acm.hdu.edu.cn/showproblem.php?pid=4283

#include <cstdio>
#include <iostream>
#define INF 0x3f3f3f3f
using namespace std;

int d[105];
int sum[105];
int dp[105][105];

int main ()
{
    int T, n;
    scanf("%d", &T);
    for(int kase=1; kase<=T; kase++) {
        scanf("%d", &n);
        for(int i=1; i<=n; i++) {
            scanf("%d", &d[i]);
            sum[i] = sum[i-1] + d[i];
        }
        for(int step=1; step<n; step++) {
            for(int i=1; i+step<=n; i++) {
                int j = i+step;
                dp[i][j] = INF;
                for(int k=i; k<=j; k++) {
                    int cur = dp[i+1][k]+(k-i)*d[i];
                    cur += dp[k+1][j]+(sum[j]-sum[k])*(k-i+1); // 加回来，变成后面部分真正的值
                    dp[i][j] = min(dp[i][j], cur);
                }
            }
        }
        printf("Case #%d: %d\n", kase, dp[1][n]);
    }
    
    return 0;
}