func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(0);     int n;     cin >> n;     if (n == 1)       cout <<  1 ;     else if (n <= 5 && n != 3)       cout <<  3 ;     else if (n <= 13)       cout <<  5 ;     else if (n <= 25)       cout <<  7 ;     else if (n <= 41)       cout <<  9 ;     else if (n <= 61)       cout <<  11 ;     else if (n <= 85)       cout <<  13 ;     else       cout <<  15 ;     return 0;   }   