romannumber.py

n = int(input())
while(True):
    if 1000 <= n:
        print("M",end='')
        n = n-1000
    else:
        break
while(True):    
    if 900 <= n :
        print("XM",end='')
        n = n-900  
    else:
        break    
while(True):    
    if 500 <= n :
        print("D",end='')
        n = n-500  
    else:
        break
while(True):    
    if 400 <= n :
        print("XD",end='')
        n = n-400  
    else:
        break    
while(True):    
    if 100 <= n :
        print("C",end='')
        n = n-100  
    else:
        break
while(True):    
    if 90 <= n :
        print("XC",end='')
        n = n-90  
    else:
        break    
while(True):    
    if 50 <= n :
        print("L",end='')
        n = n-50  
    else:
        break
while(True):    
    if 40 <= n :
        print("XL",end='')
        n = n-40  
    else:
        break    
while(True):    
    if 10 <= n :
        print("X",end='')
        n = n-10  
    else:
        break
while(True):    
    if 9 <= n :
        print("IX",end='')
        n = n-9  
    else:
        break                
while(True):    
    if 5 <= n :
        print("v",end='')
        n = n-5  
    else:
        break
while(True):    
    if 4 <= n :
        print("IV",end='')
        n = n-4  
    else:
        break
while(True):    
    if 1 <= n :
        print("I",end='')
        n = n-1  
    else:
        break