#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
const ll INF = 1e18;
int32_t main() {
ios::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 += 1) {
cin >> h[i];
}
for (int i = 1; i <= n; i += 1) {
cin >> w[i];
}
vector<ll> dp(n + 1, INF);
dp[1] = 0;
for (int i = 1; i <= n; i += 1) {
ll sum = 0;
for (int j = i + 1; j <= n; j += 1) {
dp[j] = min(dp[j], dp[i] + (h[i] - h[j]) * (h[i] - h[j]) + sum);
sum += w[j];
}
}
cout << dp[n] << endl;
return 0;
}
