func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long int maxN = 2e5 + 100;   const long long int maxM = 1e3 + 100;   const long long int mod = 1e9 + 7;   const long long int hmod = 1e16 + 7;   const long double PI = 3.141592653;   const long double eps = 1e-8;   const long long int D = 1379;   const long long int INF = 1e18 + 20;   const long long int Inf = 1e9 + 140;   long long int dp1[maxN];   long long int dp2[maxN];   long long int n, a[maxN];   long long int sum[maxN];   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     cin >> n;     for (long long int i = 1; i <= n; i++)       cin >> a[i], sum[i] = sum[i - 1] + a[i];     dp1[n] = sum[n];     dp2[n] = -dp1[n];     for (long long int i = n - 1; i >= 1; i--) {       dp1[i] = max(dp1[i + 1], dp2[i + 1] + sum[i]);       dp2[i] = -dp1[i];     }     cout << dp1[2] << endl;   }   