#include <iostream>
#include <string>
using namespace std;

int main() {
	int n;
	string s, s1;
	cin>>n;
	while(n != 0){
		if (n % 2 == 0) s += "0";
		else s += "1";
		n = n / 2;
	}
	for (int i = s.size() - 1; i >= 0; i--) {
		if (s[i] == '1') s1 += "SX";
		else s1 += "S";
	}
	s1.erase(0, 2);
	cout<<s1;
	
	return 0;
}