#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;
int f[101][101];
int s[101];
int n,i,j,k,x;
int hh()
{
	scanf("%d",&n);
	for(i=1;i<=n;i++)
	{
		scanf("%d",&x);
		s[i]=s[i-1]+x;
		
	}
	memset(f,127/3,sizeof(f));
	for(i=1;i<=n;i++)f[i][i]=0;
	for(i=n-1;i>=1;i--)
	 for(j=i+1;j<=n;j++)
	   for(k=i;k<=j-1;k++)
	    f[i][j]=min(f[i][j],f[i][k]+f[k+1][j]+s[j]-s[i-1]);
	    printf("%d",f[1][n]);
}
int Main()
{
	freopen("shizi.in","r",stdin);
	freopen("shizi.out","w",stdout);
	hh();
}
int work=Main();
int main(){;
}