#include <string.h>
#include <stdio.h>
int main()
	{char r[100];
	scanf("%s", r);
	if( strcmp(r, "VI") == 0 ) printf("IV");
	else if( strcmp(r, "XI") == 0 ) printf("IX");
	else if( strcmp(r, "XVI") == 0 ) printf("XIV");
	else if( strcmp(r, "XXI") == 0 ) printf("XIX");
	else if( strcmp(r, "XXVI") == 0 ) printf("XXIV");
	else if( strcmp(r, "XXXI") == 0 ) printf("XXIX");
	else if( strcmp(r, "XXXVI") == 0 ) printf("XXXIV");
	else if( strcmp(r, "XLVI") == 0 ) printf("XLIV");
	else if( strcmp(r, "LVI") == 0 ) printf("LIV");
	else if( strcmp(r, "LXI") == 0 ) printf("LIX");
	else if( strcmp(r, "LXVI") == 0 ) printf("LXIV");
	else if( strcmp(r, "LXVI") == 0 ) printf("XLIV");
	else if( strcmp(r, "LXXI") == 0 ) printf("LXIX");
	else if( strcmp(r, "LXXVI") == 0 ) printf("LXXIV");
	else if( strcmp(r, "LXXXI") == 0 ) printf("LXXIX");
	else if( strcmp(r, "LXXXVI") == 0 ) printf("LXXXIV");
	else if( strcmp(r, "XCVI") == 0 ) printf("XCIV");
	else if( strcmp(r, "XCVI") == 0 ) printf("XCIV");
	else printf("%s", r);


	printf("\n");
return 0;
}