changed int to long long to avoid potential overflow

main.cpp

@@ -92,7 +92,7 @@ int main(int argc, const char *argv[]) {
       p.e = (p.destination - p.curr_pos) / (p.destination - p.curr_pos).norm();
     }
   }
-  int W = (8 + 55 * n_p - 55 + 144 + 4 + 8 + 4 + 10) * n_p * n_iter;
+  long long W = (long long)(8 + 55 * n_p - 55 + 144 + 4 + 8 + 4 + 10) * n_p * n_iter;
   std::cout << "W(n): ";
   std::cout << W;
   std::cout << " flops\n";