#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second
const ll inf = numeric_limits<ll> :: max();
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n; cin>>n;
vector<int> h(n + 1), w(n + 1);
for (int i = 1; i <= n; i++){
cin>>h[i];
}
vector<ll> p(n + 1);
for (int i = 1; i <= n; i++){
cin>>w[i];
p[i] = p[i - 1] + w[i];
}
auto sum = [&](int l, int r){
return p[r] - p[l - 1];
};
auto sq = [&](int x){
return 1LL * x * x;
};
vector<ll> dp(n + 1);
for (int i = 2; i <= n; i++){
dp[i] = inf;
for (int j = 1; j < i; j++){
dp[i] = min(dp[i], dp[j] + sum(j + 1, i - 1) + sq(h[i] - h[j]));
}
}
cout<<dp[n]<<"\n";
}
