#include <stdio.h>

int r[1000];
char p[10][10]={{"MCXI"},{"DLV"}};

int rtoi(){
int vysl=0;
if(r[0]==-1) return 0;
for(int i=0;r[i]>=0;i++){
  if((r[i]==1 || r[i]==10 || r[i]==100) && (r[i+1]>=0) && ((r[i+1]==5*r[i]) || (r[i+1]==10*r[i])))
    {vysl+=r[i+1]-r[i]; i++;}
  else vysl+=r[i];
  }
return vysl;
}

void itor(int l,int c){
int kl;
//printf("%d\n",l);
if(l>10000) {printf("Error\n"); return;}
else printf("%d=",c);
while(l>=1000) {l-=1000; putchar('M');}
for(int i=100,j=0;i;i/=10,j++){
  switch((l/i)%10){
    case 4: {printf("%c%c",p[0][j+1],p[1][j]); break;}
    case 9: {printf("%c%c",p[0][j+1],p[0][j]); break;}
    default: {
      kl=((l/i)%10); 
      if(kl>5) {printf("%c",p[1][j]); kl-=5;}
      while(kl--) putchar(p[0][j+1]); 
      }
  }}
return;
}


int main(){
bool ple[10],err,znam;
int reg[10];
char c,d;
int j,vy;
for(int i=0;i<10;i++) {ple[i]=0;reg[i]=0;}
for(;;){
c=getchar();
switch (c){
  case 'R': {
    printf("Ready\n");
    for(int i=0;i<10;i++) {ple[i]=0;reg[i]=0;}
    while((d=getchar())!='\n');
    break;
    }
  case 'Q': {printf("Bye\n"); return 0;}
  default : {
    d=getchar(); 
    j=0;
    vy=0;
    err=0;
    znam=0;
    while((d=getchar())!='\n'){
      switch(d){
        case 'O': {r[j]=0; j++; break;}
        case 'I': {r[j]=1; j++; break;}
	case 'V': {r[j]=5; j++; break;}
	case 'X': {r[j]=10; j++; break;}
	case 'L': {r[j]=50; j++; break;}
	case 'C': {r[j]=100; j++; break;}
	case 'D': {r[j]=500; j++; break;}
	case 'M': {r[j]=1000; j++; break;}
        case ' ': {break;}
        case '+': {r[j]=-1; if (!znam) vy+=rtoi(); else vy-=rtoi(); znam=0; j=0; break;}
        case '-': {r[j]=-1; if (!znam) vy+=rtoi(); else vy-=rtoi(); znam=1; j=0; break;}
        default : {if((d-'0')<0 || (d-'0')>9) printf("lol"); if (!znam) vy+=reg[c-'0']; else vy-=reg[c-'0']; znam=0; if(!ple[c-'0']) err=1; j=0; break;}
        }}
    ple[c-'0']=1; 
     if(j>0){ 
       r[j]=-1; 
       if (!znam) vy+=rtoi(); 
       else vy-=rtoi(); 
       }
     if(err) printf("Error\n"); 
     else {
      //  printf("%d",vy);putchar(p[2][0]);
        itor(vy,c-'0'); 
	reg[c-'0']=vy; 
	putchar('\n');
	}
      
    //c=getchar();  
      
    //printf("%d",rtoi());
    
    } 
  }
}}