#include <iostream>
    int main()
    {
        unsigned long long n = 1934L;

        // save the original
        unsigned long long final_number = n;

        // multiplying factor
        unsigned long mult = 1;
        n /= 10;
        while (n > 0)
        {
            // determines the multiplication factor after the loop 
            mult *= 10; 

            // strip off digit from number
            n /= 10;
        }
        
        // create the final number from the original and the multiplication factor
        final_number = (final_number % mult) * 10 + final_number / mult;
        std::cout << final_number << "\n";
    }