func_code_string: #include <bits/stdc++.h>   using namespace std;   long long second;   long long a1[1231], a2[2131];   long long b[1231];   long long sum[1231];   int main() {     int n;     cin >> n;     for (int i = 2; i <= n; i++) cin >> a1[i];     for (int i = 1; i <= n - 1; i++) cin >> a2[i];     for (int i = 1; i <= n; i++) {       cin >> b[i];       second += a1[i];       sum[i] = b[i] + second;     }     second = 0;     for (int i = n; i >= 1; i--) {       second += a2[i];       sum[i] += second;     }     sort(sum, sum + n + 1);     cout << sum[1] + sum[2];   }   