#include<iostream>
#include<cstdio>
#include<cctype>
#include<cstring>
#define gys mylove
using namespace std;
int n,s,a[101],dp[101][101];
inline void in(int &x)
{
    x=0;int f=1;char t=getchar();
    while(!isdigit(t)){if(t=='-')f=-1;t=getchar();}
    while(isdigit(t)){x=x*10+t-48;t=getchar();}
    x*=f;
}
inline void input(){
	in(n);
	for(int i=1;i<=n;i++) in(s),a[i]=a[i-1]+s;
}
inline void work(){
	for(int j=1;j<=n;j++)
	 for(int i=j;i>=1;i--){
	 	if(i==j) dp[i][j]=0;
	 	else{
	 		for(int k=j-1;k>=i;k--) dp[i][j]=min(dp[i][j],dp[i][k]+dp[k+1][j]+a[j]-a[i-1]);
		}
	 }
	printf("%d",dp[1][n]);
}
int Main(){
	memset(dp,0x7f,sizeof(dp));
	freopen("shizi.in","r",stdin);
	freopen("shizi.out","w",stdout);
	input();
	work();
	return 0;
}
int main(){;}
int gys=Main();