#include <iostream>
#include <string>

int main() {
    int n;
    std::cin >> n;
    std::string str = std::to_string(n);
    std::string reversed = "";
    for (int i = str.length() - 1; i >= 0; i--) {
        reversed += str[i];
    }
    
    std::cout << reversed << std::endl;
    
    return 0;
}