#include <bits/stdc++.h>
#define int long long
using namespace std;
vector<int> memo, cost, h;
int N;
int dp(int i) {
if (i == N) return LLONG_MAX;
if (i == N - 1) return 0;
if (memo[i] != -1) return memo[i];
int sum = 0;
int res = LLONG_MAX;
for (int j = i+1; j < N; j++) {
res = min(res, dp(j) + sum + (h[i] - h[j]) * (h[i] - h[j]));
sum += cost[j];
}
return memo[i] = res;
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
cin >> N;
memo.resize(N, -1); cost.resize(N); h.resize(N);
for (int i = 0; i < N; i++) cin >> h[i];
for (int i = 0; i < N; i++) cin >> cost[i];
cout << dp(0);
return 0;
}
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