#include <iostream>
#include <clocale>
using namespace std;

int main() {
    int c;
    cout << "Menu:" << endl;
    cout << "1. Income and delays -> lines of code" << endl;
    cout << "2. Lines of code and desired salary -> delay" << endl;
    cout << "3. Lines of code and delays -> salary" << endl;
    cin >> c;

    int l;
    int t;
    int s;

    switch (c) {
        case 1:
            cout << "Enter the desired income ($): ";
            cin >> s;
            cout << "Enter the number of tardies: ";
            cin >> t;
            s += (t / 3) * 20;
            l = (s / 50.0) * 100;
            cout << "Vasyl needs to write " << l << " lines of code." << endl;
            break;

        case 2:
            cout << "Enter the number of lines of code: ";
            cin >> l;
            cout << "Enter your desired salary ($): ";
            cin >> s;
            int b;
            b = (l / 100) * 50;
            cout << "Vasya can be late at most "
                 << ((b - s) / 20) * 3 << " time(s)." << endl;
            break;

        case 3:
            cout << "Enter the number of lines of code: ";
            cin >> l;
            cout << "Enter the number of tardies: ";
            cin >> t;
            s = (l / 100) * 50 - (t / 3) * 20;
            if (s > 0)
                cout << "Vasyl's salary: " << s << " $" << endl;
            else
                cout << "Vasya will not be paid anything." << endl;
            break;

        default:
            cout << "Invalid choice." << endl;
    }
    return 0;
}