03. Flowers

#include <iostream>

using namespace std;

int main() {
    int chrysanthemums, roses, tulips;
    cin >> chrysanthemums >> roses >> tulips;

    string season, holiday;
    cin >> season >> holiday;

    double chrysanthemumPrice;
    double rosePrice;
    double tulipPrice;

    if (season == "Spring" || season == "Summer") {
        chrysanthemumPrice = 2.00;
        rosePrice = 4.10;
        tulipPrice = 2.50;
    }
    else {
        chrysanthemumPrice = 3.75;
        rosePrice = 4.50;
        tulipPrice = 4.15;
    }

    double totalSum = chrysanthemums * chrysanthemumPrice + roses * rosePrice + tulips * tulipPrice;

    if (holiday == "Y") {
        totalSum *= 1.15;
    }

    if (tulips > 7 && season == "Spring") {
        totalSum *= 0.95;
    }

    if (roses >= 10 && season == "Winter") {
        totalSum *= 0.90;
    }

    if (chrysanthemums + roses + tulips > 20) {
        totalSum *= 0.80;
    }

    printf("%.2f\n", totalSum + 2);

    return 0;
}

Решение с тернарен оператор:

#include <iostream>

using namespace std;

int main() {
    int chrysanthemums, roses, tulips;
    cin >> chrysanthemums >> roses >> tulips;

    string season, holiday;
    cin >> season >> holiday;

    double chrysanthemumPrice = season == "Spring" || season == "Summer" ? 2.00 : 3.75;
    double rosePrice = season == "Spring" || season == "Summer" ? 4.10 : 4.50;
    double tulipPrice = season == "Spring" || season == "Summer" ? 2.50 : 4.15;

    double totalSum = (chrysanthemums * chrysanthemumPrice + roses * rosePrice + tulips * tulipPrice) * (holiday == "Y" ? 1.15 : 1);
    totalSum *= tulips > 7 && season == "Spring" ? 0.95 : roses >= 10 && season == "Winter" ? 0.90 : 1;
    totalSum *= chrysanthemums + roses + tulips > 20 ? 0.80 : 1;

    printf("%.2f\n", totalSum + 2);

    return 0;
}