01. Day of Week

#include <iostream>

using namespace std;

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

    string weekDays[8] = {
        "Invalid day!",
        "Monday",
        "Tuesday",
        "Wednesday",
        "Thursday",
        "Friday",
        "Saturday",
        "Sunday"
    };

    cout << weekDays[(n > 0 && n < 8 ? n : 0)] << endl;
    return 0;
}