Solution: Big (O) of a Nested Loop with Subtraction

class NestedLoop {
  public static void main(String[] args) {
    int n = 10; // O(time complexity of the called function)
    int sum = 0; //O(1)
    double pie = 3.14; //O(1)
    
    
    for (int var = n; var >= 1; var = var - 3) { // O(n/3)
      System.out.println("Pie: " + pie); // O(n/3)
      
      for (int j = n; j >= 0; j = j - 1) { // O((n/3)*(n+1))
        sum++; // O((n/3)*(n+1))
      }
    } //end of outer for loop
  System.out.println("Sum: " + sum);//O(1)
  } //end of main
} //end of class