#include<iostream>
#include<cstdio>
using namespace std;
long long int a[105],dp[105][105];
int n;
int main(){
	freopen("shizi.in","r",stdin);
	freopen("shizi.out","w",stdout);
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		a[i]+=a[i-1];
		for(int j=1;j<=n;j++)dp[i][j]=0x7fffffff;
		dp[i][i]=0;
	}
	dp[0][0]=0;
	for(int i=n-1;i>=1;i--)
	for(int j=i+1;j<=n;j++)
	for(int k=i;k<=j-1;k++)
	dp[i][j]=min(dp[i][j],dp[i][k]+dp[k+1][j]+a[j]-a[i-1]);
	cout<<dp[1][n];
	fclose(stdin);
	fclose(stdout);
	return 0;
}