func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, a[200005], sum, cnt, ans;   int main() {     cin >> n;     for (int i = 1; i <= n; i++) {       scanf( %lld , &a[i]);       sum += a[i];     }     for (int i = 1; i <= n; i += 2) cnt += a[i];     ans = cnt;     for (int i = 1; i < n; i++) {       cnt = sum - cnt + a[i];       ans = max(ans, cnt);     }     printf( %lld n , ans);   }   