#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second
#define pii pair <int , int>
#define arr3 array <int , 3>
using namespace std;
const int INF = 1e18;
const int maxn = 1e3 + 7;
int n , a[maxn] , b[maxn] , dp[maxn];
// nộp hiểu đề bài:
void solve()
{
cin >> n;
for(int i = 1; i <= n; i++) cin >> a[i];
for(int i = 1; i <= n; i++) cin >> b[i];
for(int i = 1; i <= n; i++) dp[i] = INF;
dp[1] = 0;
for(int i = 2; i <= n; i++)
{
int sum = 0;
for(int j = i-1; j >= 1; j--)
{
dp[i] = min(dp[i] , dp[j] + sum + (a[i] - a[j])*(a[i] - a[j]));
sum += b[j];
}
}
//for(int i = 1; i <= n; i++) cout << dp[i] << '\n';
cout << dp[n] << '\n';
}
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
solve();
return 0;
}
