func_code_string: #include <bits/stdc++.h>   using namespace std;   template <typename T>   T abs(T a) {     return a < 0 ? -a : a;   }   template <typename T>   T sqr(T a) {     return a * a;   }   const int INF = (int)1e9;   const long double EPS = 1e-9;   const long double PI = 3.1415926535897932384626433832795;   int main() {     int n;     cin >> n;     cout << n <<    ;     for (int i = 1; i < n; i++) cout << i <<    ;     cout << endl;     return 0;   }   