#include <iostream>
#include <cassert>
#include <string>
using namespace std;
 
namespace translate {
	bool is_digit(char c) {
		return c >= '0' && c <= '9';
	}
	int char_to_digit(char c) {
		assert(is_digit(c));
		return c-'0';
	}
}
 
int main() {
	string dict[] = {
		"nulla",
		"I", "II", "III", "IV", "V", 
		"VI", "VII", "VIII", "IX", "X"
	};
 
	char c;
	while(cin >> c) {
		cout << dict[translate::char_to_digit(c)] << endl;
	}
	return 0;
}

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MCAxIDIgMyA0IDUgNiA3IDggOQ==

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