func_code_string: #include <bits/stdc++.h>   using namespace std;   using ll = long long;   const int inf = 0x3f3f3f3f;   const ll INF = 0x3f3f3f3f3f3f3f3fLL;   const int MAXN = 1e6 + 5;   int arr[MAXN], n;   ll fun(ll x) {     if (x == 1) return INF;     ll sum = 0, y = 0;     for (int i = 0; i < n; i++) {       y += arr[i];       y %= x;       sum += min(y, x - y);     }     return sum;   }   int main() {     std::ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);     ll sum = 0, ans = INF;     cin >> n;     for (int i = 0; i < n; i++) cin >> arr[i], sum += arr[i];     if (sum < 2) {       cout << -1 <<   n ;       return 0;     }     for (ll i = 2; i * i <= sum; i++) {       if (sum % i == 0) ans = min(ans, fun(i));       while (sum % i == 0) sum /= i;     }     ans = min(ans, fun(sum));     cout << ans <<   n ;     return 0;   }   