#include<stdio.h>

#include<math.h>
#include<string.h>
int main(){
   char a[11],g;
   int i,k,h,r;
  r=0;
 for(i=0;i<10;i++){
                    a[i]=' '  ;
                    
                    }
scanf("%s",&a);
     
       h=strlen(a); 
    
    for(i=0;i<h;i++){
    
     if ((a[i]=='V')&&(a[i+1]=='I')&&(a[i+2]!='I')){
                       g=a[i];
                       a[i]=a[i+1];
                       a[i+1]=g;
                       
                       }
                       
     if ((a[i]=='X')&&(a[i+1]=='I')&&(a[i+2]!='I')){
                       g=a[i];
                       a[i]=a[i+1];
                       a[i+1]=g;
                       
                       }
                                       

                       
                                        
     if ((a[i]=='L')&&(a[i+1]=='X')&&(a[i+2]!='X')){
                       g=a[i];
                       a[i]=a[i+1];
                       a[i+1]=g;
                       
                       
                       }
                       }
                       
        
   
                       
                       
                       
                       
                       
                       
                       
     for(i=0;i<h;i++){
                                     printf("%c",a[i]);
                    
                    }               
              
   
    

return 0;

}