var GET=(function(){function f(s){return new g(s);}function g(s){this._s=s.trim().split("\n");this._y=0;}g.prototype.a=function(f){var s=this._s, y=this._y, r;if(typeof s[y]==="string")s[y]=s[y].split(" ").reverse();r=s[y].pop();if(!s[y].length)this._y++;return f?r:+r;};g.prototype.l=function(f){var s=this._s[this._y++].split(" ");return f?s:s.map(a=>+a);};g.prototype.m=function(n,f){var r=this._s.slice(this._y,this._y+=n).map(a=>a.split(" "));return f?r:r.map(a=>a.map(a=>+a));};g.prototype.r=function(n,f){var r=this._s.slice(this._y,this._y+=n);return f?r:r.map(a=>+a);};return f;})();
var o=GET(require("fs").readFileSync("/dev/stdin","utf8"));
function xArray(v){var a=arguments,l=a.length,r="Array(a["+--l+"]).fill(v)";while(--l)r="Array(a["+l+"]).fill(0).map(x=>"+r+")";return eval(r);}

console.log(main());
function main(){
  var n = o.a();
  var a = o.l();
  return solve(n,a);
}

function solve(n,a){
  var cost = xArray(0,n,n);
  for(var i = 0; i < n; i++)cost[0][i] = a[i];
  for(var i = 1; i < n; i++)for(var j = 0; j < n-i; j++){
    cost[i][j] = cost[i-1][j] + cost[0][i+j];
  }
  var dp = xArray(1e15,n,n);
  dp[0] = xArray(0,n);
  for(var i = 1; i < n; i++)
  for(var j = 0; j < n-i; j++)
  for(var k = 1; k <= i; k++){
    var t = dp[i-k][j] + dp[k-1][i-k+j+1] + cost[i][j];
    if(t < dp[i][j])dp[i][j] = t;
  }
  return dp[n-1][0];
}