#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int n,x;
int s[110];
int h[110][110];
int min(int p,int q){
	if(p>q)return q;
	else return p;
}
int main()
{
	freopen("shizi.in","r",stdin);
	freopen("shizi.out","w",stdout);
	scanf("%d",&n);
	for(int i=1;i<=n;i++)
	{
		scanf("%d",&x);
		s[i]=s[i-1]+x;
    } 
    memset(h,127/3,sizeof(h));
	for(int i=1;i<=n;i++)h[i][i]=0;
	for(int i=n-1;i>=1;i--)
	  for(int j=i+1;j<=n;j++)
	    for(int k=i;k<j;k++)
          h[i][j]=min(h[i][j],h[i][k]+h[k+1][j]+s[j]-s[i-1]);
	printf("%d",h[1][n]);
	fclose(stdin);
	fclose(stdout);
	return 0;
}