#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
const int MOD = (int)1e9 + 7;
const int MAXN = (int)1e6 + 7;
const int infint = (int)1e9;
const ll inf = 1e18;
ll n, h[MAXN], w[MAXN], dp[MAXN];
int main()
{
ios::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
cin >> n;
for (int i = 0; i < n; i++)
cin >> h[i];
for (int i = 0; i < n; i++)
cin >> w[i];
for (int i = 1; i < n; i++)
w[i] += w[i - 1];
dp[0] = 0;
for (int i = 1; i < n; i++)
{
dp[i] = inf;
for (int j = 0; j < i; j++)
dp[i] = min(dp[i], dp[j] + (h[i] - h[j]) * (h[i] - h[j]) + w[i - 1] - w[j]);
}
cout << dp[n - 1];
}
