#include<iostream> 
using namespace std;
int n;
int ls[110];
int dp[110][110];
int main(){
    freopen("shizi.in","r",stdin);
    freopen("shizi.out","w",stdout);
    
    scanf("%d",&n);
    for(int i=1;i<=n;i++) scanf("%d",&ls[i]),ls[i]+=ls[i-1];
    
    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=i;k<j;k++) dp[i][j]=min(dp[i][j],dp[i][k]+dp[k+1][j]+ls[j]-ls[i-1]);
        }
    }
    printf("%lld",dp[1][n]);
    
    
    
    return 0;
}