#include<bits/stdc++.h>
using namespace std;
#define FOR(i, a, b) for(int i = a; i < b; ++i)
#define REP(i, n) FOR(i, 0, n)
#define _ << " " <<
#define sz(x) ((int) x.size())
#define pb(x) push_back(x)
#define TRACE(x) cerr << #x << " = " << x << endl
typedef long long ll;
typedef pair<ll, ll> point;
const int MAXN = 1e5 + 5, MAXV = 105;
const ll inf = 1e16;
int n, h[MAXN], w[MAXN];
ll dp[MAXN];
int main(){
ios_base::sync_with_stdio(false); cin.tie(0);
cin >> n;
REP(i, n)
cin >> h[i + 1];
REP(i, n){
cin >> w[i + 1];
if(i > 0)
w[i + 1] += w[i];
}
FOR(i, 2, n + 1){
dp[i] = inf;
FOR(j, 1, i)
dp[i] = min(dp[i], dp[j] + (h[i] - h[j]) * (h[i] - h[j]) + w[i - 1] - w[j] );
}
cout << dp[n];
}
