func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long logn = 63;   const long long inf = 1e18;   void upd(long long& a, const long long& b) { a = min(a, b); }   int main() {     ios::sync_with_stdio(false);     cin.tie(0);     int n;     cin >> n;     vector<long long> a(n), b(n);     for (int i = 0; i < n; i++) cin >> a[i];     long long mx = *max_element(a.begin(), a.end());     for (int i = 0; i < n; i++) b[i] = mx - a[i];     vector<vector<long long> > dp(logn, vector<long long>(n + 1, inf));     dp[0][0] = 0;     vector<int> s;     for (int i = 0; i < n; i++) s.push_back(i);     for (long long bit = 0; bit + 1 < logn; bit++) {       if (bit) {         vector<int> nws;         for (int i : s)           if (!(b[i] & (1ll << (bit - 1)))) nws.push_back(i);         for (int i : s)           if (b[i] & (1ll << (bit - 1))) nws.push_back(i);         s = nws;       }       vector<long long> pf0(n + 1, 0), pf1(n + 1, 0);       for (int i = 0; i < n; i++) {         pf0[i + 1] = pf0[i], pf1[i + 1] = pf1[i];         if (b[s[i]] & (1ll << bit))           pf1[i + 1]++;         else           pf0[i + 1]++;       }       for (int sf = 0; sf <= n; sf++) {         int b0ones = pf1[n - sf] + (pf0[n] - pf0[n - sf]);         int b0carry = pf1[n] - pf1[n - sf];         upd(dp[bit + 1][b0carry], dp[bit][sf] + b0ones);         int b1ones = pf0[n - sf] + (pf1[n] - pf1[n - sf]);         int b1carry = n - pf0[n - sf];         upd(dp[bit + 1][b1carry], dp[bit][sf] + b1ones);       }     }     cout << dp[logn - 1][0] <<   n ;     return 0;   }   