func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n;     cin >> n;     if (n == 1 || n == 2) {       cout <<  -1 ;       return 0;     } else if (n % 2 == 1) {       long long k = (n - 1) / 2;       cout << 2 * k * k + 2 * k <<     << 2 * k * k + 2 * k + 1;     } else {       long long k = n / 2;       cout << k * k - 1 <<     << k * k + 1;     }     return 0;   }   