func_code_string: #include <bits/stdc++.h>   using namespace std;   void doRoutine() {     ios_base::sync_with_stdio(false);     cin.tie(nullptr);     cout.tie(nullptr);     srand(322179);   }   signed main() {     doRoutine();     long long n;     cin >> n;     long long res = 0;     while (n > 0) {       ++res;       n /= 2;     }     cout << res << endl;     return 0;   }   