#include <stdio.h>

int solve() {
    int M=0, D=0, C=0, L=0, X=0, V=0, I=0;
    char ch;
    
    while (ch=getchar()) {
	switch (ch) {
	    case 'm':
		M++;
		D=C=L=X=V=I=0;
		break;
	    case 'd':
		if (D==0) {
		    D=1;
		    C=L=X=V=I=0;
		}
		break;
	    case 'c':
		if (C<3) {
		    C++;
		    L=X=V=I=0;
		}
		break;
	    case 'l':
		if (L==0) {
		    L=1;
		    X=V=I=0;
		}
		break;
	    case 'x':
		if (X<3) {
		    X++;
		    V=I=0;
		}
		break;
	    case 'v':
		if (V==0) {
		    V=1;
		    I=0;
		}
		break;
	    case 'i':
		if (I<3) {
		    I++;
		}
		break;
	    case '\n':
		printf("%d\n",M*1000+ D*500+ C*100 +L*50+ X*10+ V*5+ I);
		return 1;
	    case EOF:
		printf("%d\n",M*1000+ D*500+ C*100 +L*50+ X*10+ V*5+ I);
		return 0;
	    default:
		break;	
	}
    }
    return 0;
}

int main(void) {
    for (;;) {
	if (!solve()) {
	    return 0;
	}
    }
}