C++ :

#include <iostream>
#include<cstdio>
#include<cstdlib>
using namespace std;
#define M 101
#define INF 1000000000
int n,f[M][M],sum[M][M],stone[M];
int main()
{
    int i,j,k,t;
    cin>>n;
    for(i=1;i<=n;i++)
        scanf("%d",&stone[i]);

    for(i=1;i<=n;i++)
    {
        f[i][i]=0;
        sum[i][i]=stone[i];
        for(j=i+1;j<=n;j++)
            sum[i][j]=sum[i][j-1]+stone[j];
    }

    for(int len=2;len<=n;len++)
    {
        for(i=1;i<=n-len+1;i++)
        {
            j=i+len-1;
            f[i][j]=INF;
            for(k=i;k<=j-1;k++)
            {
                if(f[i][j]>f[i][k]+f[k+1][j]+sum[i][j])
                    f[i][j]=f[i][k]+f[k+1][j]+sum[i][j];
            }
        }
    }
    printf("%d\n",f[1][n]);
    return 0;
}