#include<bits/stdc++.h>
#define int long long
using namespace std;
int n,a[105],dp[105][105],s[105];
signed main()
{
    freopen("shizi.in","r",stdin);
    freopen("shizi.out","w",stdout);
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
    {
        scanf("%d",&a[i]);
        s[i]=s[i-1]+a[i];
    }
    for(int d=2;d<=n;d++)
    {
        for(int i=1;i<=n-d+1;i++)
        {
            int j=i+d-1;
            dp[i][j]=0x3fffffff;
            for(int k=i;k<j;k++)
            {
                dp[i][j]=min(dp[i][k]+dp[k+1][j]+s[j]-s[i-1],dp[i][j]);
            }
        }
    }
    printf("%d",dp[1][n]);
    return 0;
}