#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <string>
#include <cstring>
#include <cmath>
#include <vector>

using namespace std;

void ispis(char c, int n){
	for(int i = 0; i < n; i++) cout<<c;		
}

int main(void)
{
	char b[100];

	scanf("%s", b);
	if(strcmp(b, "VI") == 0) cout<<"IV";
	else if(strcmp(b, "XI") == 0) cout<<"IX";
	else if(strcmp(b, "XVI") == 0) cout<<"XIV";
	else if(strcmp(b, "XXI") == 0) cout<<"XIX";
	else if(strcmp(b, "XXVI") == 0) cout<<"XXIV";
	else if(strcmp(b, "XXXI") == 0) cout<<"XXIX";
	else if(strcmp(b, "XXXVI") == 0) cout<<"XXXIV";
	else if(strcmp(b, "XLVI") == 0) cout<<"XLIV";
	else if(strcmp(b, "LVI") == 0) cout<<"LIV";
	
	else if(strcmp(b, "LXI") == 0) cout<<"XLI";
	else if(strcmp(b, "LXII") == 0) cout<<"XLII";
	else if(strcmp(b, "LXIII") == 0) cout<<"XLIII";
	else if(strcmp(b, "LXIV") == 0) cout<<"XLIV";
	else if(strcmp(b, "LXV") == 0) cout<<"XLV";
	else if(strcmp(b, "LXVI") == 0) cout<<"XLIV";
	else if(strcmp(b, "LXVII") == 0) cout<<"XLVII";
	else if(strcmp(b, "LXVIII") == 0) cout<<"XLVIII";
	else if(strcmp(b, "LXIX") == 0) cout<<"XLIX";
	
	else if(strcmp(b, "LXXVI") == 0) cout<<"LXXIV";
	else if(strcmp(b, "LXXXI") == 0) cout<<"LXXIX";
	else if(strcmp(b, "LXXXVI") == 0) cout<<"LXXXVI";
	else if(strcmp(b, "XCVI") == 0) cout<<"XCIV";
	else cout<<b<<endl;    

     return 0;
}