func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long int n;     cin >> n;     long long int sum1 = (n * (n + 1)) / 2;     if (sum1 % 2 == 0) {       cout <<  0  << endl;     } else {       cout <<  1  << endl;     }   }   