#include <iostream>

constexpr int full_crates(int count, int capacity) {
    return capacity > 0 && count >= 0 ? count / capacity : 0;
}

int main() {
    constexpr int crates = full_crates(17, 5);
    static_assert(crates == 3);
    static_assert(full_crates(0, 5) == 0);
    std::cout << "Full crates: " << crates << '\n';
}