// Solution of 1960 Roman Numerals for Page N...
// (Mahmud_Jamil) BRUR
#include <stdio.h>
#include <string.h>
int main()
{
char x[5];
int lnth;
lnth = strlen(gets(x));
if(lnth==3)
{
if(x[0]=='1') printf("C");
else if(x[0]=='2') printf("CC");
else if(x[0]=='3') printf("CCC");
else if(x[0]=='4') printf("CD");
else if(x[0]=='5') printf("D");
else if(x[0]=='6') printf("DC");
else if(x[0]=='7') printf("DCC");
else if(x[0]=='8') printf("DCCC");
else if(x[0]=='9') printf("CM");
if(x[1]=='1') printf("X");
else if(x[1]=='2') printf("XX");
else if(x[1]=='3') printf("XXX");
else if(x[1]=='4') printf("XL");
else if(x[1]=='5') printf("L");
else if(x[1]=='6') printf("LX");
else if(x[1]=='7') printf("LXX");
else if(x[1]=='8') printf("LXXX");
else if(x[1]=='9') printf("XC");
if(x[2]=='1') printf("I");
else if(x[2]=='2') printf("II");
else if(x[2]=='3') printf("III");
else if(x[2]=='4') printf("IV");
else if(x[2]=='5') printf("V");
else if(x[2]=='6') printf("VI");
else if(x[2]=='7') printf("VII");
else if(x[2]=='8') printf("VIII");
else if(x[2]=='9') printf("IX");
}
else if(lnth==2)
{
if(x[0]=='1') printf("X");
else if(x[0]=='2') printf("XX");
else if(x[0]=='3') printf("XXX");
else if(x[0]=='4') printf("XL");
else if(x[0]=='5') printf("L");
else if(x[0]=='6') printf("LX");
else if(x[0]=='7') printf("LXX");
else if(x[0]=='8') printf("LXXX");
else if(x[0]=='9') printf("XC");
if(x[1]=='1') printf("I");
else if(x[1]=='2') printf("II");
else if(x[1]=='3') printf("III");
else if(x[1]=='4') printf("IV");
else if(x[1]=='5') printf("V");
else if(x[1]=='6') printf("VI");
else if(x[1]=='7') printf("VII");
else if(x[1]=='8') printf("VIII");
else if(x[1]=='9') printf("IX");
}
else if(lnth==1)
{
if(x[0]=='1') printf("I");
else if(x[0]=='2') printf("II");
else if(x[0]=='3') printf("III");
else if(x[0]=='4') printf("IV");
else if(x[0]=='5') printf("V");
else if(x[0]=='6') printf("VI");
else if(x[0]=='7') printf("VII");
else if(x[0]=='8') printf("VIII");
else if(x[0]=='9') printf("IX");
}
printf("\n");
return 0;
}