func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long maxn = 1e5 + 1;   long long n, a[maxn], b[maxn], f1, f2;   signed main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     cin >> n;     for (long long i = 0; i < n; ++i) cin >> a[i];     for (long long i = 0; i < n; ++i) cin >> b[i];     long long max1 = a[0], max2 = b[0];     f1 = a[0];     f2 = b[0];     for (long long i = 1; i < n; ++i) {       f1 = max2 + a[i];       f2 = max1 + b[i];       max1 = max(max1, f1);       max2 = max(max2, f2);     }     cout << max(max1, max2) <<   n ;     return 0;   }   