Summer Shopping

#include <iostream>
#include <string>

using namespace std;

int main() {
    double budget, towel, discount;
    cin >> budget >> towel >> discount;

    double umbrella = towel / 3 * 2;
    double flipFlops = umbrella * 0.75;
    double beachBag = (towel + flipFlops) / 3;

    double sum = (towel + umbrella + flipFlops + beachBag) * (100 - discount) / 100;

    printf("Annie's sum is %.2f lv. ", sum);
    if (budget >= sum) {
        printf("She has %.2f lv. left.", budget - sum);
    }
    else {
        printf("She needs %.2f lv. more.", sum - budget);
    }
    return 0;
}