#include #include using namespace std; int main() { string fuelType; double quantity price; if (!(cin >> fuelType >> quantity >> price)) { cout << "Invalid input" << endl; return 0; } if ((fuelType == "petrol" || fuelType =="diesel") && quantity > 0 && price > 0) { double totalCost = quantity * price; cout << fixed << setprecision(2) << totalCost << endl; }else{ cout << "Invalid input" << endl; } return 0; }