Aluminum Joinery

#include <iostream>
#include <string>

using namespace std;

int main() {
    int count;
    cin >> count;

    string size;
    cin >> size;
    cin.ignore();

    string delivery;
    getline(cin, delivery);

    double price, discountPercentage, totalPrice;

    if (count <= 10) {
        cout << "Invalid order\n";
    }
    else {
        if (size == "90X130") {
            price = 110;
            if (count > 60) {
                discountPercentage = 8;
            }
            else  if (count > 30) {
                discountPercentage = 5;
            }
        }
        else if (size == "100X150") {
            price = 140;
            if (count > 80) {
                discountPercentage = 10;
            }
            else if (count > 40) {
                discountPercentage = 6;
            }
        }
        else if (size == "130X180") {
            price = 190;
            if (count > 50) {
                discountPercentage = 12;
            }
            else if (count > 20) {
                discountPercentage = 7;
            }
        }
        else if (size == "200X300") {
            price = 250;
            if (count > 50) {
                discountPercentage = 14;
            }
            else if (count > 25) {
                discountPercentage = 9;
            }
        }

        totalPrice = price * count * ((100 - discountPercentage) / 100);

        if (delivery == "With delivery") {
            totalPrice += 60;
        }
        if (count > 99) {
            totalPrice *= 0.96;
        }

        printf("%.2f BGN\n", totalPrice);
    }
    return 0;
}