#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vb = vector<bool>;
using vvb = vector<vb>;
using vi = vector<int>;
using vvi = vector<vi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vc = vector<char>;
using vvc = vector<vc>;
using vs = vector<string>;
const ll mod = 1e9 + 7,inf = 1e18;
#define pb push_back
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
void setIO()
{
fast;
}
int main()
{
setIO();
int n;
cin>>n;
vl h(n + 1),w(n + 1),dp(n + 1),p(n + 1);
for (int i = 1;i<=n;i++)cin>>h[i];
for (int i = 1;i<=n;i++){cin>>w[i];p[i] = p[i - 1] + w[i];}
for (int i = 2;i<=n;i++){
dp[i] = inf;
for (int j = i - 1;j>=1;j--){
dp[i] = min(dp[i],dp[j] + (h[i] - h[j]) * (h[i] - h[j]) + p[i - 1] - p[j]);
}
}
cout<<dp[n];
return 0;
}
