#include <bits/stdc++.h>

using std::cin;
using std::cout;
using std::string;

int main() {
	string s;
	cin >> s;
	int n = s.size();
	
	if (n == 1) s = "00" + s;
	if (n == 2) s = "0" + s;
	
	cout << s << '\n';
	
	return 0;
}