// Slower C++ solution:
#include<bits/stdc++.h>

using namespace std;

#define crap ios::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)

typedef long long int ll;

typedef unsigned long long ull;

typedef std::vector<int> vi;

typedef std::vector<ll> vll;

typedef std::vector<vi > vvi;

typedef std::vector<vll > vvll;

typedef std::pair<int,int> ii;

typedef std::pair< ll, ll > lp;

typedef std::vector<ii> vii;

typedef std::vector<vii > vvii;





#define pb push_back 

#define PB pop_back

#define pf push_front

#define PF pop_front

#define mp make_pair

#define ub(a,b) upper_bound(all(a),b)

#define lb(a,b) lower_bound(all(a),b)

#define bs(a,b) binary_search(all(a),b)

#define mem(a,b) memset(a,b,sizeof(a))

#define in(a,n) f(i,0,n-1)cin>>a[i]

#define in1(a,n) f(i,1,n)cin>>a[i]

#define out(a,n) f(i,0,n-1)cout<<fixed<<setprecision(20)<<a[i]<<" ";cout<<"\n"

#define ff first

#define ss second

#define f(i,a,b) for (int i=a;i<=b;i++)

#define rf(i,a,b) for(int i=a;i>=b;i--)

#define rep(i,n) f(i,0,n-1)

#define clr(a) (a).clear()

#define rz resize

#define sqr(a) ((a) * (a))

#define sz(a) int((a).size())

#define all(a) (a).begin(), (a).end()

#define rall(a) (a).rbegin() ,(a).rend()

#define endl '\n'



const int N=405;



ll dp[N][N];



ll a[N],pref[N];



int main(int argc, char const *argv[])

{

	crap;



	rep(i,N)

		rep(j,N)

			dp[i][j]=99999999999999;



	int n;

	cin>>n;

	in1(a,n);



	f(i,1,n)

		pref[i]=pref[i-1]+a[i];



	f(i,1,n)

		dp[i][i]=0;



	f(len,2,n)

	{

		f(i,1,n-len+1)

		{

			int j=i+len-1;

			f(k,i,j-1)

			{

				dp[i][j]=min(dp[i][j],dp[i][k]+dp[k+1][j]);

			}

			// cout<<i<<":"<<j<<"="<<dp[i][j]<<endl;

			dp[i][j]+=pref[j]-pref[i-1];

		}

	}



	cout<<dp[1][n]<<endl;

	return 0;

}

// Faster C++ solution for the same problem (measured speedup: 2.311111878326908x):
#include<bits/stdc++.h>

using namespace std;

#define crap ios::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)

 

typedef long long int ll;

typedef unsigned long long ull;

typedef std::vector<int> vi;

typedef std::vector<ll> vll;

typedef std::vector<vi > vvi;

typedef std::vector<vll > vvll;

typedef std::pair<int,int> ii;

typedef std::pair<int, ii > iii;

typedef std::pair< ll, ll > lp;

typedef std::vector<ii> vii;

typedef std::vector<vii > vvii;

 

#define int ll

#define pb push_back 

#define PB pop_back

#define pf push_front

#define PF pop_front

#define mp make_pair

#define ub(a,b) upper_bound(all(a),b)

#define lb(a,b) lower_bound(all(a),b)

#define bs(a,b) binary_search(all(a),b)

#define mem(a,b) memset(a,b,sizeof(a))

#define in(a,n) F(i,0,n-1)cin>>a[i]

#define in1(a,n) F(i,1,n)cin>>a[i]

#define out(a,n) F(i,0,n-1)cout<<a[i]<<" ";cout<<endl

#define ff first

#define ss second

#define F(i,a,b) for (ll i=a;i<=b;i++)

#define RF(i,a,b) for(ll i=a;i>=b;i--)

#define rep(i,n) F(i,0,n-1)

#define clr(a) (a).clear()

#define rz resize

#define sqr(a) ((a) * (a))

#define sz(a) int((a).size())

#define len(a) int((a).length())

#define all(a) (a).begin(), (a).end()

#define rall(a) (a).rbegin() ,(a).rend()

// #define endl '\n'

 

#define mod 1000000007

// #define mod 998244353

 

inline int add(int a, int b){a += b; if(a >= mod)a -= mod; return a;}

inline int sub(int a, int b){a -= b; if(a < 0)a += mod; return a;}

inline int mul(int a, int b){return (int)((long long) a * b %mod);}

inline int poww(int a, int b){int res = 1; while(b > 0){ if(b & 1)res = mul(res, a); a = mul(a, a);b /= 2;} return res;}

inline int inv(int a){return poww(a, mod - 2);}

int gcd(int a, int b, int &x, int &y){if(a == 0){x = 0, y = 1; return b;} int x1, y1;  int d = gcd(b%a, a, x1, y1); x = y1 - (b/a) * x1; y = x1; return d;}

 

// #################################### matrix operations ####################################

inline vvi matmul(vvi A, vvi B) {int p = A.size(), q = A[0].size();int r = B.size(), s = B[0].size();assert(q == r);vvi C(p, vi(s, 0LL));

	rep(i, p){rep(j, s){rep(k, q){

				// C[i][j] += A[i][k] * B[k][j]; 

				C[i][j] = add(C[i][j], mul(A[i][k], B[k][j]));

	}}}return C;}

 

inline vvi matpow(vvi A, int n){int p = A.size(), q = A[0].size();assert(p == q);vvi res(p, vi(p, 0));rep(i, p)res[i][i] = 1;while (n){if (n&1)res = matmul(res, A);A = matmul(A, A);n >>= 1;}return res;}

 

// ###########################################################################################

 

// #################################### Combinatorics template ###############################

struct factorial{

	int N;int *fac;int *ifac;int MOD;

	factorial(int n, int m = 1000000007){N = n;MOD = m;fac = new int[1+N];ifac = new int[1+N];pre_calc();}

	int add(int a, int b){a += b; if(a >= MOD)a -= MOD; return a;}

	int subtract(int a, int b){a -= b; if(a < 0)a += MOD; return a;}

	int multiply(int a, int b){return (int)((long long) a * b %MOD);}

	int binpow(int a, int b){int res = 1; while(b > 0){ if(b & 1)res = multiply(res, a); a = multiply(a, a);b /= 2;} return res;}

	int inverse(int a){return binpow(a, MOD - 2);}

	void pre_calc(){fac[0] = ifac[0] = 1;for (int i = 1 ; i <= N ; i++){fac[i] = multiply(fac[i-1], i);ifac[i] = multiply(ifac[i-1], inverse(i));}}

	int ncr(int n , int r){return multiply(fac[n], multiply(ifac[r], ifac[n-r]));}

	int derangement(int n){

		if (n == 1) return 0;

		int ans = 0;

		for (int i = 2; i <= n ; i++){

			int sign = (i%2) ? -1 : 1;

			ans = add(ans, multiply(sign, fac[n]/fac[i]));

		}

		return ans;

	}

};

// ###########################################################################################

 

// ##################################### Fenwick Tree template ###############################

struct fenwick_tree{

	int *bit;int n;

	fenwick_tree(int n){this->n = n;this->bit = new int[n+1];}

	void add(int i, int v){for (; i<=this->n; i+= i&-i)this->bit[i] += v;}

	int get(int i){int s = 0;for (; i; i -= i&-i){s += this->bit[i];}return s;}

};

// ###########################################################################################

 

// ######################################## Policy-based DS ##################################

// #include<ext/pb_ds/assoc_container.hpp>

// using namespace __gnu_pbds;

 

// template<class key, class value = null_type, class cmp = std::less<key>>

// using ordered_tree = tree<key, value, cmp, rb_tree_tag, tree_order_statistics_node_update>;

// order_of_key (val): returns the no. of values less than val

// find_by_order (k): returns the iterator to kth largest element.(0-based)

 

// ###########################################################################################

 

#define trace(x) cout<<#x<<" :: "<<x<<endl;

#define trace2(x,y) cout<<#x<<" :: "<<x<<"\t"<<#y<<" :: "<<y<<endl;

#define trace3(x,y,z) cout<<#x<<" :: "<<x<<"\t"<<#y<<" :: "<<y<<"\t"<<#z<<" :: "<<z<<endl;

#define trace4(x,y,z,w) cout<<#x<<" :: "<<x<<"\t"<<#y<<" :: "<<y<<"\t"<<#z<<" :: "<<z<<"\t"<<#w<<" :: "<<w<<endl;

 

//end of template



const int N = 405;

int a[N];

int pref[N];

int dp[N][N];

int n;



signed main(){

	crap;

	cin >> n ;

	in1(a, n);

	F(i, 1, n)

		pref[i] = pref[i-1] + a[i];

	F(i, 1, n)

		dp[i][i] = 0;



	F(i, 1, n-1){

		dp[i][i+1] = a[i] + a[i+1];

	}



	F(l, 3, n){

		F(i, 1, n - l + 1){

			int j = i + l - 1;

			int ans = LLONG_MAX;

			F(k, i, j-1){

				ans = min(ans, dp[i][k] + dp[k+1][j]);

			}

			int always = pref[j] - pref[i-1];

			dp[i][j] = ans+always;

		}

	}

	cout << dp[1][n] << endl;

}