#include <stdio.h>

int main(void)
{
	char s[10020];
	while(1)
	{
	int ptr = 0;
	int nacteno = 0;
		
		while(1)
		{
			char c;
			if(scanf("%c",&c)!=1)return 0;
			nacteno++;
			/*printf("%c",c);*/
			if(c=='\n')break;
			{if(c=='i'||c=='I')s[ptr++] = 'I';}
			{if(c=='v'||c=='V')s[ptr++] = 'V';}
			{if(c=='x'||c=='X')s[ptr++] = 'X';}
			{if(c=='l'||c=='L')s[ptr++] = 'L';}
			{if(c=='c'||c=='C')s[ptr++] = 'C';}
			{if(c=='d'||c=='D')s[ptr++] = 'D';}
			{if(c=='m'||c=='M')s[ptr++] = 'M';}
		}
		int i;
		int M=0,D=0,C=0,L=0,X=0,V=0,I=0,lastpos=-1;
		for(i=0;i<ptr;i++)
		{
			if(s[i] == 'M')
			{M++;lastpos = i;}
		}	
		for(i=lastpos+1;i<ptr;i++)
		{
			if(s[i] == 'D')
			{D++;lastpos = i;break;}
		}	
		for(i=lastpos+1;i<ptr;i++)
		{
			if(s[i] == 'C')
			{C++;lastpos = i;if(C>2)break;}
		}	
		for(i=lastpos+1;i<ptr;i++)
		{
			if(s[i] == 'L')
			{L++;lastpos = i;break;}
		}	
		for(i=lastpos+1;i<ptr;i++)
		{
			if(s[i] == 'X')
			{X++;lastpos = i;if(X>2)break;}
		}	
		for(i=lastpos+1;i<ptr;i++)
		{
			if(s[i] == 'V')
			{V++;lastpos = i;break;}
		}	
		for(i=lastpos+1;i<ptr;i++)
		{
			if(s[i] == 'I')
			{I++;lastpos = i;if(I>2)break;}
		}	
		if(nacteno)
		printf("%d\n",M*1000 + D*500 + C*100 + L*50 + X*10 + V*5 + I);
	}
	return 0;
}