Care of Puppy

#include <iostream>
#include <string>

using namespace std;

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

    int availableFoodInGrams = foodInKilograms * 1000;

    string command;
    cin >> command;

    while (command != "Adopted") {
        availableFoodInGrams -= stoi(command);
        cin >> command;
    }

    if (availableFoodInGrams >= 0) {
        printf("Food is enough! Leftovers: %i grams.", availableFoodInGrams);
    }
    else {
        printf("Food is not enough. You need %i grams more.", abs(availableFoodInGrams));
    }

    return 0;
}