#include<bits/stdc++.h>
typedef long long ll;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
using namespace std;
ll n,i,a[101010],p[101010],d[101010],w[101010],b[101010];
ll depe(ll aa)
{
if(aa==n)return 0;
if(!b[aa])
{
b[aa]=1;
d[aa]=1e18;
ll ii;
for(ii=aa+1;ii<=n;ii++)
d[aa]=min(d[aa],depe(ii)+p[ii-1]-p[aa]+(a[aa]-a[ii])*(a[aa]-a[ii]));
}
return d[aa];
}
int main()
{
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin>>n;
for(i=1;i<=n;i++)cin>>a[i];
for(i=1;i<=n;i++)cin>>w[i];
for(i=1;i<=n;i++)p[i]=p[i-1]+w[i];
cout<<depe(1)<<"\n";
}
