func_code_string: #include <bits/stdc++.h>   using namespace std;   int make(int c) {     if (c == 10000000) return 1;     return 0;   }   long long bb[3][300005], cc[3][300005], dd[3][300005], ee[3][300005];   long long int a[3][300005 + 1];   int main() {     int n, fl = 0, m, q;     cin >> n;     int i;     for (i = 1; i <= n; i++) {       cin >> a[1][i];     }     for (i = 1; i <= n; i++) {       cin >> a[2][i];     }     long long ans = 0;     int j = 0;     for (i = 1; i <= n; i++) {       ans += a[1][i] * j;       j++;     }     for (i = n; i >= 1; i--) {       ans += a[2][i] * j;       j++;     }     long long ans1 = 0, s = 0;     ans1 = max(ans, ans1);     for (i = 1; i <= n; i++) {       s += a[1][i];       bb[1][i] = s;     }     for (i = n; i >= 1; i--) {       s += a[2][i];       bb[2][i] = s;     }     s = 0;     for (i = 1; i <= n; i++) {       s += a[2][i];       cc[2][i] = s;     }     for (i = n; i >= 1; i--) {       s += a[1][i];       cc[1][i] = s;     }     j = 1;     s = 0;     for (i = 1; i <= n; i++) {       s += a[1][i] * j;       dd[1][i] = s;       j++;     }     for (i = n; i >= 1; i--) {       s += a[2][i] * j;       dd[2][i] = s;       j++;     }     j = 1;     s = 0;     for (i = 1; i <= n; i++) {       s += a[2][i] * j;       ee[2][i] = s;       j++;     }     for (i = n; i >= 1; i--) {       s += a[1][i] * j;       ee[1][i] = s;       j++;     }     j = 1;     long long anss = 0;     long long g;     int curidx = 1, prev = 1, cur = 2;     ans1 = max(ans1, ans);     while (1) {       g = 0;       if (prev == 1 && cur == 2) {         anss += j * a[cur][curidx];         cur = 2;         prev = 2;         g = anss;         if (curidx < n)           g += ee[1][curidx + 1] +                (j - curidx) * (cc[1][curidx + 1] - cc[2][curidx]) - ee[2][curidx];         j++;         curidx++;       } else if (prev == 2 && cur == 2) {         anss += j * a[cur][curidx];         cur = 1;         prev = 2;         g = anss;         g += ee[1][curidx] + (j - curidx) * (cc[1][curidx] - cc[2][curidx]) -              ee[2][curidx];         j++;       } else if (prev == 2 && cur == 1) {         anss += j * a[cur][curidx];         cur = 1;         prev = 1;         g = anss;         if (curidx < n)           g += dd[2][curidx + 1] +                (j - curidx) * (bb[2][curidx + 1] - bb[1][curidx]) - dd[1][curidx];         j++;         curidx++;       } else if (prev == 1 && cur == 1) {         anss += j * a[cur][curidx];         cur = 2;         prev = 1;         g = anss;         g += dd[2][curidx] + (j - curidx) * (bb[2][curidx] - bb[1][curidx]) -              dd[1][curidx];         j++;       }       ans1 = max(ans1, g);       if (curidx > n) break;     }     cout << ans1 << endl;   }   