func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[1000005], n;   long long ans = 0;   long long now = 0;   long long solve(long long p) {     ans = 0;     now = 0;     for (int i = 1; i <= n; i++) {       now += a[i];       now %= p;       ans += min(now, p - now);     }     return ans;   }   int main() {     cin >> n;     long long sum = 0;     for (int i = 1; i <= n; i++) {       scanf( %d , a + i);       sum = sum + a[i];     }     if (sum == 1) {       cout <<  -1  << endl;     } else {       long long ans0 = (1ll << 62);       for (int p = 2; p <= 1e6; p++) {         if (sum % p == 0) {           ans0 = min(ans0, solve(p));           while (sum % p == 0) sum /= p;         }       }       if (sum != 1) ans0 = min(ans0, solve(sum));       cout << ans0 << endl;     }     return 0;   }   