01. Dishwasher

#include <iostream>
#include <string>

using namespace std;

int main() {
    const int BOTTLED_DETERGENT_IN_MILILITERS = 750;

    int detergentCount, counter = 1, dishes = 0, pots = 0;
    cin >> detergentCount;

    int detergentQuantity = detergentCount * BOTTLED_DETERGENT_IN_MILILITERS;

    string command;

    while (true) {

        cin >> command;

        if (command == "End") {
            cout << "Detergent was enough!\n"
                << dishes << " dishes and " << pots << " pots were washed.\n"
                << "Leftover detergent " << detergentQuantity << " ml.\n";
            break;
        }

        int detergentRefillInMililiters = stoi(command);

        if (counter % 3 != 0) {
            dishes += detergentRefillInMililiters;
            detergentQuantity -= detergentRefillInMililiters * 5;
        }
        else {
            pots += detergentRefillInMililiters;
            detergentQuantity -= detergentRefillInMililiters * 15;
        }

        if (detergentQuantity < 0) {
            cout << "Not enough detergent, " << abs(detergentQuantity) << " ml. more necessary!\n";
            break;
        }

        counter++;
    }

    return 0;
}

РЕШЕНИЕ С FOR:

#include <iostream>
#include <string>

using namespace std;

int main() {
    const int BOTTLED_DETERGENT_IN_MILILITERS = 750;

    int detergentCount, dishes = 0, pots = 0;
    cin >> detergentCount;

    int detergentQuantity = detergentCount * BOTTLED_DETERGENT_IN_MILILITERS;

    string command;

    for (int counter = 1; counter < 2147483647; counter++) {  // INT_MAX = 2147483647

        cin >> command;

        if (command == "End") {
            cout << "Detergent was enough!\n"
                << dishes << " dishes and " << pots << " pots were washed.\n"
                << "Leftover detergent " << detergentQuantity << " ml.\n";
            break;
        }

        int detergentRefillInMililiters = stoi(command);

        if (counter % 3 != 0) {
            dishes += detergentRefillInMililiters;
            detergentQuantity -= detergentRefillInMililiters * 5;
        }
        else {
            pots += detergentRefillInMililiters;
            detergentQuantity -= detergentRefillInMililiters * 15;
        }

        if (detergentQuantity < 0) {
            cout << "Not enough detergent, " << abs(detergentQuantity) << " ml. more necessary!\n";
            break;
        }
    }

    return 0;
}

РЕШЕНИЕ С FOR И ТЕРНАРЕН ОПЕРАТОР:

#include <iostream>
#include <string>

using namespace std;

int main() {
    const int BOTTLED_DETERGENT_IN_MILILITERS = 750;

    int detergentCount, dishes = 0, pots = 0;
    cin >> detergentCount;

    int detergentQuantity = detergentCount * BOTTLED_DETERGENT_IN_MILILITERS;

    string command;
    cin >> command;

    for (int counter = 1; counter < 2147483647 && command != "End" && detergentQuantity >= 0; counter++) {

        counter % 3 == 1 ? dishes += stoi(command) : pots += stoi(command);
        detergentQuantity -= (counter % 3 == 1 ? 5 : 15) * stoi(command);
        cin >> command;
    }

    command == "End" ?
        cout << "Detergent was enough!\n"
        << dishes << " dishes and " << pots << " pots were washed.\n"
        << "Leftover detergent " << detergentQuantity << " ml.\n" :
        cout << "Not enough detergent, " << abs(detergentQuantity) << " ml. more necessary!\n";

    return 0;
}