06. Cake

#include <iostream>
#include <string>

using namespace std;

int main() {
    int x, y;
    cin >> x >> y;

    int cakePieces = x * y;

    string command;
    cin >> command;

    while (cakePieces > 0 && command != "STOP") {
        cakePieces -= stoi(command);
        cin >> command;
    }


    if (cakePieces >= 0){
        cout << cakePieces << " pieces are left.\n";
    }
    else {
        cout << "No more cake left! You need " << abs(cakePieces) << " pieces more.\n";
    }

    return 0;
}

РЕШЕНИЕ С ТЕРНАРЕН ОПЕРАТОР:

#include <iostream>
#include <string>

using namespace std;

int main() {
    int x, y;
    cin >> x >> y;

    int cakePieces = x * y;

    string command;
    cin >> command;

    while (cakePieces > 0 && command != "STOP") {
        cakePieces -= stoi(command);
        cin >> command;
    }

    cakePieces >= 0 ?
        cout << cakePieces << " pieces are left.\n" :
        cout << "No more cake left! You need " << abs(cakePieces) << " pieces more.\n";

    return 0;
}