#include <iostream>
#include <string>

int main() {
    std::string s_day;
    
    std::cout << "Day of the week (numeric form): " << std::endl;
    std::cin >> s_day;
    
    int day;
    
    try {
        day = std::stoi(s_day);
    } catch(const std::invalid_argument& e) {
        std::cerr << "Error: Invalid input";
        return 1;
    }
    
    switch(day) {
        case 1: std::cout << "Sunday";
            break;
            
        case 2: std::cout << "Monday";
            break;
            
        case 3: std::cout << "Tuesday";
            break;
        
        case 4: std::cout << "Wednesday";
            break;
            
        case 5: std::cout << "Thursday";
            break;
            
        case 6: std::cout << "Friday";
            break;
            
        case 7: std::cout << "Saturday";
            break;
            
        default: std::cout << "Invalid day of the week";
    }
    
    return 0;
}