#include <bits/stdc++.h>
using namespace std;
int n;long long a[10001],dp[1001][1001],sum[10001];
int main(){
	scanf("%d",&n);
	for(int i = 1;i<=n;i++){
		scanf("%d",&a[i]);
		sum[i]+=sum[i-1]+a[i];
	}
	for(int len = 2;len<=n;len++)
		for(int i = 1;i+len-1<=n;i++){
			int j = i+len-1;
			dp[i][j] = 0x3f3f3f3f;
			for(int k = 1;k<j;k++)dp[i][j] = min(dp[i][j],dp[i][k]+dp[k+1][j]+sum[j]-sum[i-1]);
		}
	printf("%d",dp[1][n]);
	return 0;
}